Home / 12,453,019.40-18,679,529.10-8,197,992.20

Finding the Fourth Proportional to 12,453,019.40, 18,679,529.10 and 8,197,992.20

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Solution

The fourth proportional to 12,453,019.40, 18,679,529.10 and 8,197,992.20 is: 12,296,988.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,453,019.40 : 18,679,529.10 = 8,197,992.20 : x
  2. Step 2: Convert to fraction form
    12,453,019.40/18,679,529.10 = 8,197,992.20/x
  3. Step 3: Cross multiply
    12,453,019.40x = 18,679,529.10 × 8,197,992.20
  4. Step 4: Simplify right side
    12,453,019.40x = 153,134,633,861,473.03
  5. Step 5: Solve for x
    x = 153,134,633,861,473.03/12,453,019.40
  6. Step 6: Final answer
    x = 12,296,988.30

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.