Home / 15,397.40-21,248.28-8,323.76

Finding the Fourth Proportional to 15,397.40, 21,248.28 and 8,323.76

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Solution

The fourth proportional to 15,397.40, 21,248.28 and 8,323.76 is: 11,486.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,397.40 : 21,248.28 = 8,323.76 : x
  2. Step 2: Convert to fraction form
    15,397.40/21,248.28 = 8,323.76/x
  3. Step 3: Cross multiply
    15,397.40x = 21,248.28 × 8,323.76
  4. Step 4: Simplify right side
    15,397.40x = 176,865,583.13
  5. Step 5: Solve for x
    x = 176,865,583.13/15,397.40
  6. Step 6: Final answer
    x = 11,486.72

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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.