Home / 28,145.92-38,839.76-15,569.92

Finding the Fourth Proportional to 28,145.92, 38,839.76 and 15,569.92

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Solution

The fourth proportional to 28,145.92, 38,839.76 and 15,569.92 is: 21,485.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,145.92 : 38,839.76 = 15,569.92 : x
  2. Step 2: Convert to fraction form
    28,145.92/38,839.76 = 15,569.92/x
  3. Step 3: Cross multiply
    28,145.92x = 38,839.76 × 15,569.92
  4. Step 4: Simplify right side
    28,145.92x = 604,731,956.02
  5. Step 5: Solve for x
    x = 604,731,956.02/28,145.92
  6. Step 6: Final answer
    x = 21,485.60

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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.