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Finding the Fourth Proportional to 36,937.80, 55,406.70 and 21,337.20

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Solution

The fourth proportional to 36,937.80, 55,406.70 and 21,337.20 is: 32,005.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,937.80 : 55,406.70 = 21,337.20 : x
  2. Step 2: Convert to fraction form
    36,937.80/55,406.70 = 21,337.20/x
  3. Step 3: Cross multiply
    36,937.80x = 55,406.70 × 21,337.20
  4. Step 4: Simplify right side
    36,937.80x = 1,182,223,839.24
  5. Step 5: Solve for x
    x = 1,182,223,839.24/36,937.80
  6. Step 6: Final answer
    x = 32,005.80

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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.