Home / 21,470.01-29,613.62-20,747.49

Finding the Fourth Proportional to 21,470.01, 29,613.62 and 20,747.49

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Solution

The fourth proportional to 21,470.01, 29,613.62 and 20,747.49 is: 28,617.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,470.01 : 29,613.62 = 20,747.49 : x
  2. Step 2: Convert to fraction form
    21,470.01/29,613.62 = 20,747.49/x
  3. Step 3: Cross multiply
    21,470.01x = 29,613.62 × 20,747.49
  4. Step 4: Simplify right side
    21,470.01x = 614,408,336.68
  5. Step 5: Solve for x
    x = 614,408,336.68/21,470.01
  6. Step 6: Final answer
    x = 28,617.05

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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.