Home / 30,720.26-42,394.12-17,291.75

Finding the Fourth Proportional to 30,720.26, 42,394.12 and 17,291.75

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Solution

The fourth proportional to 30,720.26, 42,394.12 and 17,291.75 is: 23,862.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,720.26 : 42,394.12 = 17,291.75 : x
  2. Step 2: Convert to fraction form
    30,720.26/42,394.12 = 17,291.75/x
  3. Step 3: Cross multiply
    30,720.26x = 42,394.12 × 17,291.75
  4. Step 4: Simplify right side
    30,720.26x = 733,068,269.31
  5. Step 5: Solve for x
    x = 733,068,269.31/30,720.26
  6. Step 6: Final answer
    x = 23,862.70

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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.