Home / 28,247.29-38,981.15-15,500.69

Finding the Fourth Proportional to 28,247.29, 38,981.15 and 15,500.69

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Solution

The fourth proportional to 28,247.29, 38,981.15 and 15,500.69 is: 21,390.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,247.29 : 38,981.15 = 15,500.69 : x
  2. Step 2: Convert to fraction form
    28,247.29/38,981.15 = 15,500.69/x
  3. Step 3: Cross multiply
    28,247.29x = 38,981.15 × 15,500.69
  4. Step 4: Simplify right side
    28,247.29x = 604,234,527.09
  5. Step 5: Solve for x
    x = 604,234,527.09/28,247.29
  6. Step 6: Final answer
    x = 21,390.89

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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.