Home / 15,506.62-21,398.90-8,432.88

Finding the Fourth Proportional to 15,506.62, 21,398.90 and 8,432.88

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Solution

The fourth proportional to 15,506.62, 21,398.90 and 8,432.88 is: 11,637.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,506.62 : 21,398.90 = 8,432.88 : x
  2. Step 2: Convert to fraction form
    15,506.62/21,398.90 = 8,432.88/x
  3. Step 3: Cross multiply
    15,506.62x = 21,398.90 × 8,432.88
  4. Step 4: Simplify right side
    15,506.62x = 180,454,355.83
  5. Step 5: Solve for x
    x = 180,454,355.83/15,506.62
  6. Step 6: Final answer
    x = 11,637.25

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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.