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Finding the Fourth Proportional to 15,801.81, 23,685.71 and 8,398.82

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Solution

The fourth proportional to 15,801.81, 23,685.71 and 8,398.82 is: 12,589.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,801.81 : 23,685.71 = 8,398.82 : x
  2. Step 2: Convert to fraction form
    15,801.81/23,685.71 = 8,398.82/x
  3. Step 3: Cross multiply
    15,801.81x = 23,685.71 × 8,398.82
  4. Step 4: Simplify right side
    15,801.81x = 198,931,854.44
  5. Step 5: Solve for x
    x = 198,931,854.44/15,801.81
  6. Step 6: Final answer
    x = 12,589.18

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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.