Home / 39,160.75-54,041.88-21,255.75

Finding the Fourth Proportional to 39,160.75, 54,041.88 and 21,255.75

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Solution

The fourth proportional to 39,160.75, 54,041.88 and 21,255.75 is: 29,332.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,160.75 : 54,041.88 = 21,255.75 : x
  2. Step 2: Convert to fraction form
    39,160.75/54,041.88 = 21,255.75/x
  3. Step 3: Cross multiply
    39,160.75x = 54,041.88 × 21,255.75
  4. Step 4: Simplify right side
    39,160.75x = 1,148,700,770.52
  5. Step 5: Solve for x
    x = 1,148,700,770.52/39,160.75
  6. Step 6: Final answer
    x = 29,332.96

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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.