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Finding the Fourth Proportional to 18,606.08, 28,037.02 and 15,391.20

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Solution

The fourth proportional to 18,606.08, 28,037.02 and 15,391.20 is: 23,192.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,606.08 : 28,037.02 = 15,391.20 : x
  2. Step 2: Convert to fraction form
    18,606.08/28,037.02 = 15,391.20/x
  3. Step 3: Cross multiply
    18,606.08x = 28,037.02 × 15,391.20
  4. Step 4: Simplify right side
    18,606.08x = 431,523,382.22
  5. Step 5: Solve for x
    x = 431,523,382.22/18,606.08
  6. Step 6: Final answer
    x = 23,192.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.