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Finding the Fourth Proportional to 38,962.40, 58,400.40 and 21,444.80

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Solution

The fourth proportional to 38,962.40, 58,400.40 and 21,444.80 is: 32,143.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,962.40 : 58,400.40 = 21,444.80 : x
  2. Step 2: Convert to fraction form
    38,962.40/58,400.40 = 21,444.80/x
  3. Step 3: Cross multiply
    38,962.40x = 58,400.40 × 21,444.80
  4. Step 4: Simplify right side
    38,962.40x = 1,252,384,897.92
  5. Step 5: Solve for x
    x = 1,252,384,897.92/38,962.40
  6. Step 6: Final answer
    x = 32,143.42

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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.