Home / 31,909.60-44,041.36-21,135.52

Finding the Fourth Proportional to 31,909.60, 44,041.36 and 21,135.52

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Solution

The fourth proportional to 31,909.60, 44,041.36 and 21,135.52 is: 29,171.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,909.60 : 44,041.36 = 21,135.52 : x
  2. Step 2: Convert to fraction form
    31,909.60/44,041.36 = 21,135.52/x
  3. Step 3: Cross multiply
    31,909.60x = 44,041.36 × 21,135.52
  4. Step 4: Simplify right side
    31,909.60x = 930,837,045.11
  5. Step 5: Solve for x
    x = 930,837,045.11/31,909.60
  6. Step 6: Final answer
    x = 29,171.07

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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.