Home / 21,402.43-29,542.12-14,697.45

Finding the Fourth Proportional to 21,402.43, 29,542.12 and 14,697.45

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Solution

The fourth proportional to 21,402.43, 29,542.12 and 14,697.45 is: 20,287.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,402.43 : 29,542.12 = 14,697.45 : x
  2. Step 2: Convert to fraction form
    21,402.43/29,542.12 = 14,697.45/x
  3. Step 3: Cross multiply
    21,402.43x = 29,542.12 × 14,697.45
  4. Step 4: Simplify right side
    21,402.43x = 434,193,794.85
  5. Step 5: Solve for x
    x = 434,193,794.85/21,402.43
  6. Step 6: Final answer
    x = 20,287.13

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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.