Home / 14,781.90-20,398.50-8,810.47

Finding the Fourth Proportional to 14,781.90, 20,398.50 and 8,810.47

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Solution

The fourth proportional to 14,781.90, 20,398.50 and 8,810.47 is: 12,158.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,781.90 : 20,398.50 = 8,810.47 : x
  2. Step 2: Convert to fraction form
    14,781.90/20,398.50 = 8,810.47/x
  3. Step 3: Cross multiply
    14,781.90x = 20,398.50 × 8,810.47
  4. Step 4: Simplify right side
    14,781.90x = 179,720,372.30
  5. Step 5: Solve for x
    x = 179,720,372.30/14,781.90
  6. Step 6: Final answer
    x = 12,158.14

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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.