Home / 39,155.68-54,035.90-21,250.72

Finding the Fourth Proportional to 39,155.68, 54,035.90 and 21,250.72

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Solution

The fourth proportional to 39,155.68, 54,035.90 and 21,250.72 is: 29,326.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,155.68 : 54,035.90 = 21,250.72 : x
  2. Step 2: Convert to fraction form
    39,155.68/54,035.90 = 21,250.72/x
  3. Step 3: Cross multiply
    39,155.68x = 54,035.90 × 21,250.72
  4. Step 4: Simplify right side
    39,155.68x = 1,148,301,780.85
  5. Step 5: Solve for x
    x = 1,148,301,780.85/39,155.68
  6. Step 6: Final answer
    x = 29,326.57

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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.