Home / 15,838.29-21,856.10-9,124.11

Finding the Fourth Proportional to 15,838.29, 21,856.10 and 9,124.11

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Solution

The fourth proportional to 15,838.29, 21,856.10 and 9,124.11 is: 12,590.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,838.29 : 21,856.10 = 9,124.11 : x
  2. Step 2: Convert to fraction form
    15,838.29/21,856.10 = 9,124.11/x
  3. Step 3: Cross multiply
    15,838.29x = 21,856.10 × 9,124.11
  4. Step 4: Simplify right side
    15,838.29x = 199,417,414.95
  5. Step 5: Solve for x
    x = 199,417,414.95/15,838.29
  6. Step 6: Final answer
    x = 12,590.84

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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.