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Finding the Fourth Proportional to 38,090.72, 57,132.88 and 13,130.72

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Solution

The fourth proportional to 38,090.72, 57,132.88 and 13,130.72 is: 19,694.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,090.72 : 57,132.88 = 13,130.72 : x
  2. Step 2: Convert to fraction form
    38,090.72/57,132.88 = 13,130.72/x
  3. Step 3: Cross multiply
    38,090.72x = 57,132.88 × 13,130.72
  4. Step 4: Simplify right side
    38,090.72x = 750,195,850.07
  5. Step 5: Solve for x
    x = 750,195,850.07/38,090.72
  6. Step 6: Final answer
    x = 19,694.98

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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.