Home / 28,789.92-39,728.68-16,037.28

Finding the Fourth Proportional to 28,789.92, 39,728.68 and 16,037.28

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Solution

The fourth proportional to 28,789.92, 39,728.68 and 16,037.28 is: 22,130.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,789.92 : 39,728.68 = 16,037.28 : x
  2. Step 2: Convert to fraction form
    28,789.92/39,728.68 = 16,037.28/x
  3. Step 3: Cross multiply
    28,789.92x = 39,728.68 × 16,037.28
  4. Step 4: Simplify right side
    28,789.92x = 637,139,965.19
  5. Step 5: Solve for x
    x = 637,139,965.19/28,789.92
  6. Step 6: Final answer
    x = 22,130.66

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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.