Home / 39,434.58-54,421.11-21,531.15

Finding the Fourth Proportional to 39,434.58, 54,421.11 and 21,531.15

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Solution

The fourth proportional to 39,434.58, 54,421.11 and 21,531.15 is: 29,713.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,434.58 : 54,421.11 = 21,531.15 : x
  2. Step 2: Convert to fraction form
    39,434.58/54,421.11 = 21,531.15/x
  3. Step 3: Cross multiply
    39,434.58x = 54,421.11 × 21,531.15
  4. Step 4: Simplify right side
    39,434.58x = 1,171,749,082.58
  5. Step 5: Solve for x
    x = 1,171,749,082.58/39,434.58
  6. Step 6: Final answer
    x = 29,713.75

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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.