Home / 30,531.56-42,135.10-18,592.97

Finding the Fourth Proportional to 30,531.56, 42,135.10 and 18,592.97

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Solution

The fourth proportional to 30,531.56, 42,135.10 and 18,592.97 is: 25,659.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,531.56 : 42,135.10 = 18,592.97 : x
  2. Step 2: Convert to fraction form
    30,531.56/42,135.10 = 18,592.97/x
  3. Step 3: Cross multiply
    30,531.56x = 42,135.10 × 18,592.97
  4. Step 4: Simplify right side
    30,531.56x = 783,416,393.09
  5. Step 5: Solve for x
    x = 783,416,393.09/30,531.56
  6. Step 6: Final answer
    x = 25,659.24

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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.