Home / 20,349.87-28,055.25-17,397.42

Finding the Fourth Proportional to 20,349.87, 28,055.25 and 17,397.42

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Solution

The fourth proportional to 20,349.87, 28,055.25 and 17,397.42 is: 23,984.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,349.87 : 28,055.25 = 17,397.42 : x
  2. Step 2: Convert to fraction form
    20,349.87/28,055.25 = 17,397.42/x
  3. Step 3: Cross multiply
    20,349.87x = 28,055.25 × 17,397.42
  4. Step 4: Simplify right side
    20,349.87x = 488,088,967.46
  5. Step 5: Solve for x
    x = 488,088,967.46/20,349.87
  6. Step 6: Final answer
    x = 23,984.87

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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.