Home / 39,342.85-59,031.71-20,618.43

Finding the Fourth Proportional to 39,342.85, 59,031.71 and 20,618.43

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Solution

The fourth proportional to 39,342.85, 59,031.71 and 20,618.43 is: 30,936.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,342.85 : 59,031.71 = 20,618.43 : x
  2. Step 2: Convert to fraction form
    39,342.85/59,031.71 = 20,618.43/x
  3. Step 3: Cross multiply
    39,342.85x = 59,031.71 × 20,618.43
  4. Step 4: Simplify right side
    39,342.85x = 1,217,141,180.42
  5. Step 5: Solve for x
    x = 1,217,141,180.42/39,342.85
  6. Step 6: Final answer
    x = 30,936.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.