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Finding the Fourth Proportional to 36,390.40, 54,542.40 and 15,330.40

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Solution

The fourth proportional to 36,390.40, 54,542.40 and 15,330.40 is: 22,977.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,390.40 : 54,542.40 = 15,330.40 : x
  2. Step 2: Convert to fraction form
    36,390.40/54,542.40 = 15,330.40/x
  3. Step 3: Cross multiply
    36,390.40x = 54,542.40 × 15,330.40
  4. Step 4: Simplify right side
    36,390.40x = 836,156,808.96
  5. Step 5: Solve for x
    x = 836,156,808.96/36,390.40
  6. Step 6: Final answer
    x = 22,977.40

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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.