Home / 15,930.25-21,956.65-10,885.71

Finding the Fourth Proportional to 15,930.25, 21,956.65 and 10,885.71

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Solution

The fourth proportional to 15,930.25, 21,956.65 and 10,885.71 is: 15,003.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,930.25 : 21,956.65 = 10,885.71 : x
  2. Step 2: Convert to fraction form
    15,930.25/21,956.65 = 10,885.71/x
  3. Step 3: Cross multiply
    15,930.25x = 21,956.65 × 10,885.71
  4. Step 4: Simplify right side
    15,930.25x = 239,013,724.47
  5. Step 5: Solve for x
    x = 239,013,724.47/15,930.25
  6. Step 6: Final answer
    x = 15,003.76

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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.