Home / 30,644.60-42,289.29-17,215.57

Finding the Fourth Proportional to 30,644.60, 42,289.29 and 17,215.57

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Solution

The fourth proportional to 30,644.60, 42,289.29 and 17,215.57 is: 23,757.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,644.60 : 42,289.29 = 17,215.57 : x
  2. Step 2: Convert to fraction form
    30,644.60/42,289.29 = 17,215.57/x
  3. Step 3: Cross multiply
    30,644.60x = 42,289.29 × 17,215.57
  4. Step 4: Simplify right side
    30,644.60x = 728,034,191.08
  5. Step 5: Solve for x
    x = 728,034,191.08/30,644.60
  6. Step 6: Final answer
    x = 23,757.34

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Similar ratio
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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.