Home / 39,434.95-54,421.52-21,531.32

Finding the Fourth Proportional to 39,434.95, 54,421.52 and 21,531.32

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Solution

The fourth proportional to 39,434.95, 54,421.52 and 21,531.32 is: 29,713.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,434.95 : 54,421.52 = 21,531.32 : x
  2. Step 2: Convert to fraction form
    39,434.95/54,421.52 = 21,531.32/x
  3. Step 3: Cross multiply
    39,434.95x = 54,421.52 × 21,531.32
  4. Step 4: Simplify right side
    39,434.95x = 1,171,767,107.44
  5. Step 5: Solve for x
    x = 1,171,767,107.44/39,434.95
  6. Step 6: Final answer
    x = 29,713.92

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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.