Home / 28,123.26-38,808.90-15,547.92

Finding the Fourth Proportional to 28,123.26, 38,808.90 and 15,547.92

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Solution

The fourth proportional to 28,123.26, 38,808.90 and 15,547.92 is: 21,455.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,123.26 : 38,808.90 = 15,547.92 : x
  2. Step 2: Convert to fraction form
    28,123.26/38,808.90 = 15,547.92/x
  3. Step 3: Cross multiply
    28,123.26x = 38,808.90 × 15,547.92
  4. Step 4: Simplify right side
    28,123.26x = 603,397,672.49
  5. Step 5: Solve for x
    x = 603,397,672.49/28,123.26
  6. Step 6: Final answer
    x = 21,455.47

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Double scale
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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.