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Finding the Fourth Proportional to 36,400.40, 54,617.88 and 13,029.20

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Solution

The fourth proportional to 36,400.40, 54,617.88 and 13,029.20 is: 19,549.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,400.40 : 54,617.88 = 13,029.20 : x
  2. Step 2: Convert to fraction form
    36,400.40/54,617.88 = 13,029.20/x
  3. Step 3: Cross multiply
    36,400.40x = 54,617.88 × 13,029.20
  4. Step 4: Simplify right side
    36,400.40x = 711,627,282.10
  5. Step 5: Solve for x
    x = 711,627,282.10/36,400.40
  6. Step 6: Final answer
    x = 19,549.99

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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.