Home / 15,476.29-21,356.95-8,402.71

Finding the Fourth Proportional to 15,476.29, 21,356.95 and 8,402.71

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Solution

The fourth proportional to 15,476.29, 21,356.95 and 8,402.71 is: 11,595.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,476.29 : 21,356.95 = 8,402.71 : x
  2. Step 2: Convert to fraction form
    15,476.29/21,356.95 = 8,402.71/x
  3. Step 3: Cross multiply
    15,476.29x = 21,356.95 × 8,402.71
  4. Step 4: Simplify right side
    15,476.29x = 179,456,298.80
  5. Step 5: Solve for x
    x = 179,456,298.80/15,476.29
  6. Step 6: Final answer
    x = 11,595.56

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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.