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Finding the Fourth Proportional to 38,679.60, 53,372.76 and 22,760.88

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Solution

The fourth proportional to 38,679.60, 53,372.76 and 22,760.88 is: 31,407.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,679.60 : 53,372.76 = 22,760.88 : x
  2. Step 2: Convert to fraction form
    38,679.60/53,372.76 = 22,760.88/x
  3. Step 3: Cross multiply
    38,679.60x = 53,372.76 × 22,760.88
  4. Step 4: Simplify right side
    38,679.60x = 1,214,810,985.63
  5. Step 5: Solve for x
    x = 1,214,810,985.63/38,679.60
  6. Step 6: Final answer
    x = 31,407.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.