Home / 38,520.80-57,781.20-16,330.40

Finding the Fourth Proportional to 38,520.80, 57,781.20 and 16,330.40

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Solution

The fourth proportional to 38,520.80, 57,781.20 and 16,330.40 is: 24,495.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,520.80 : 57,781.20 = 16,330.40 : x
  2. Step 2: Convert to fraction form
    38,520.80/57,781.20 = 16,330.40/x
  3. Step 3: Cross multiply
    38,520.80x = 57,781.20 × 16,330.40
  4. Step 4: Simplify right side
    38,520.80x = 943,590,108.48
  5. Step 5: Solve for x
    x = 943,590,108.48/38,520.80
  6. Step 6: Final answer
    x = 24,495.60

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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.