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Finding the Fourth Proportional to 38,313.64, 52,870.92 and 21,318.88

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Solution

The fourth proportional to 38,313.64, 52,870.92 and 21,318.88 is: 29,419.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,313.64 : 52,870.92 = 21,318.88 : x
  2. Step 2: Convert to fraction form
    38,313.64/52,870.92 = 21,318.88/x
  3. Step 3: Cross multiply
    38,313.64x = 52,870.92 × 21,318.88
  4. Step 4: Simplify right side
    38,313.64x = 1,127,148,798.97
  5. Step 5: Solve for x
    x = 1,127,148,798.97/38,313.64
  6. Step 6: Final answer
    x = 29,419.00

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