Home / 15,748.43-21,731.18-9,697.68

Finding the Fourth Proportional to 15,748.43, 21,731.18 and 9,697.68

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Solution

The fourth proportional to 15,748.43, 21,731.18 and 9,697.68 is: 13,381.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,748.43 : 21,731.18 = 9,697.68 : x
  2. Step 2: Convert to fraction form
    15,748.43/21,731.18 = 9,697.68/x
  3. Step 3: Cross multiply
    15,748.43x = 21,731.18 × 9,697.68
  4. Step 4: Simplify right side
    15,748.43x = 210,741,981.17
  5. Step 5: Solve for x
    x = 210,741,981.17/15,748.43
  6. Step 6: Final answer
    x = 13,381.78

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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.