Home / 12,590,145.40-18,885,218.10-8,763,770.20

Finding the Fourth Proportional to 12,590,145.40, 18,885,218.10 and 8,763,770.20

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Solution

The fourth proportional to 12,590,145.40, 18,885,218.10 and 8,763,770.20 is: 13,145,655.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,590,145.40 : 18,885,218.10 = 8,763,770.20 : x
  2. Step 2: Convert to fraction form
    12,590,145.40/18,885,218.10 = 8,763,770.20/x
  3. Step 3: Cross multiply
    12,590,145.40x = 18,885,218.10 × 8,763,770.20
  4. Step 4: Simplify right side
    12,590,145.40x = 165,505,711,605,280.62
  5. Step 5: Solve for x
    x = 165,505,711,605,280.62/12,590,145.40
  6. Step 6: Final answer
    x = 13,145,655.30

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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.