Home / 15,294.32-21,107.76-8,581.76

Finding the Fourth Proportional to 15,294.32, 21,107.76 and 8,581.76

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Solution

The fourth proportional to 15,294.32, 21,107.76 and 8,581.76 is: 11,843.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,294.32 : 21,107.76 = 8,581.76 : x
  2. Step 2: Convert to fraction form
    15,294.32/21,107.76 = 8,581.76/x
  3. Step 3: Cross multiply
    15,294.32x = 21,107.76 × 8,581.76
  4. Step 4: Simplify right side
    15,294.32x = 181,141,730.46
  5. Step 5: Solve for x
    x = 181,141,730.46/15,294.32
  6. Step 6: Final answer
    x = 11,843.73

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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.