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Finding the Fourth Proportional to 21,580.88, 32,368.99 and 5,787.50

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Solution

The fourth proportional to 21,580.88, 32,368.99 and 5,787.50 is: 8,680.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,580.88 : 32,368.99 = 5,787.50 : x
  2. Step 2: Convert to fraction form
    21,580.88/32,368.99 = 5,787.50/x
  3. Step 3: Cross multiply
    21,580.88x = 32,368.99 × 5,787.50
  4. Step 4: Simplify right side
    21,580.88x = 187,335,562.52
  5. Step 5: Solve for x
    x = 187,335,562.52/21,580.88
  6. Step 6: Final answer
    x = 8,680.63

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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.