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Finding the Fourth Proportional to 23,275.40, 32,139.46 and 21,587

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Solution

The fourth proportional to 23,275.40, 32,139.46 and 21,587 is: 29,808.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,275.40 : 32,139.46 = 21,587 : x
  2. Step 2: Convert to fraction form
    23,275.40/32,139.46 = 21,587/x
  3. Step 3: Cross multiply
    23,275.40x = 32,139.46 × 21,587
  4. Step 4: Simplify right side
    23,275.40x = 693,794,523.02
  5. Step 5: Solve for x
    x = 693,794,523.02/23,275.40
  6. Step 6: Final answer
    x = 29,808.06

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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.