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Finding the Fourth Proportional to 38,641.64, 57,962.48 and 21,101.88

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Solution

The fourth proportional to 38,641.64, 57,962.48 and 21,101.88 is: 31,652.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,641.64 : 57,962.48 = 21,101.88 : x
  2. Step 2: Convert to fraction form
    38,641.64/57,962.48 = 21,101.88/x
  3. Step 3: Cross multiply
    38,641.64x = 57,962.48 × 21,101.88
  4. Step 4: Simplify right side
    38,641.64x = 1,223,117,297.46
  5. Step 5: Solve for x
    x = 1,223,117,297.46/38,641.64
  6. Step 6: Final answer
    x = 31,652.83

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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.