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Finding the Fourth Proportional to 21,531.58, 32,303.48 and 8,387.71

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Solution

The fourth proportional to 21,531.58, 32,303.48 and 8,387.71 is: 12,583.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,531.58 : 32,303.48 = 8,387.71 : x
  2. Step 2: Convert to fraction form
    21,531.58/32,303.48 = 8,387.71/x
  3. Step 3: Cross multiply
    21,531.58x = 32,303.48 × 8,387.71
  4. Step 4: Simplify right side
    21,531.58x = 270,952,099.53
  5. Step 5: Solve for x
    x = 270,952,099.53/21,531.58
  6. Step 6: Final answer
    x = 12,583.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.