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Finding the Fourth Proportional to 15,038.68, 20,755.50 and 8,753.08

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Solution

The fourth proportional to 15,038.68, 20,755.50 and 8,753.08 is: 12,080.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,038.68 : 20,755.50 = 8,753.08 : x
  2. Step 2: Convert to fraction form
    15,038.68/20,755.50 = 8,753.08/x
  3. Step 3: Cross multiply
    15,038.68x = 20,755.50 × 8,753.08
  4. Step 4: Simplify right side
    15,038.68x = 181,674,551.94
  5. Step 5: Solve for x
    x = 181,674,551.94/15,038.68
  6. Step 6: Final answer
    x = 12,080.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.