Home / 39,272.80-58,909.20-20,545.60

Finding the Fourth Proportional to 39,272.80, 58,909.20 and 20,545.60

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Solution

The fourth proportional to 39,272.80, 58,909.20 and 20,545.60 is: 30,818.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,272.80 : 58,909.20 = 20,545.60 : x
  2. Step 2: Convert to fraction form
    39,272.80/58,909.20 = 20,545.60/x
  3. Step 3: Cross multiply
    39,272.80x = 58,909.20 × 20,545.60
  4. Step 4: Simplify right side
    39,272.80x = 1,210,324,859.52
  5. Step 5: Solve for x
    x = 1,210,324,859.52/39,272.80
  6. Step 6: Final answer
    x = 30,818.40

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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.