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Finding the Fourth Proportional to 38,435.76, 57,549.80 and 19,928.88

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Solution

The fourth proportional to 38,435.76, 57,549.80 and 19,928.88 is: 29,839.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,435.76 : 57,549.80 = 19,928.88 : x
  2. Step 2: Convert to fraction form
    38,435.76/57,549.80 = 19,928.88/x
  3. Step 3: Cross multiply
    38,435.76x = 57,549.80 × 19,928.88
  4. Step 4: Simplify right side
    38,435.76x = 1,146,903,058.22
  5. Step 5: Solve for x
    x = 1,146,903,058.22/38,435.76
  6. Step 6: Final answer
    x = 29,839.48

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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.