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Finding the Fourth Proportional to 12,000.30, 18,008.55 and 7,064.70

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Solution

The fourth proportional to 12,000.30, 18,008.55 and 7,064.70 is: 10,601.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,000.30 : 18,008.55 = 7,064.70 : x
  2. Step 2: Convert to fraction form
    12,000.30/18,008.55 = 7,064.70/x
  3. Step 3: Cross multiply
    12,000.30x = 18,008.55 × 7,064.70
  4. Step 4: Simplify right side
    12,000.30x = 127,225,003.19
  5. Step 5: Solve for x
    x = 127,225,003.19/12,000.30
  6. Step 6: Final answer
    x = 10,601.82

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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.