Home / 15,532.22-21,434.36-8,458.58

Finding the Fourth Proportional to 15,532.22, 21,434.36 and 8,458.58

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Solution

The fourth proportional to 15,532.22, 21,434.36 and 8,458.58 is: 11,672.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,532.22 : 21,434.36 = 8,458.58 : x
  2. Step 2: Convert to fraction form
    15,532.22/21,434.36 = 8,458.58/x
  3. Step 3: Cross multiply
    15,532.22x = 21,434.36 × 8,458.58
  4. Step 4: Simplify right side
    15,532.22x = 181,304,248.81
  5. Step 5: Solve for x
    x = 181,304,248.81/15,532.22
  6. Step 6: Final answer
    x = 11,672.78

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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.