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Finding the Fourth Proportional to 21,648.53, 32,476.98 and 8,320.52

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Solution

The fourth proportional to 21,648.53, 32,476.98 and 8,320.52 is: 12,482.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,648.53 : 32,476.98 = 8,320.52 : x
  2. Step 2: Convert to fraction form
    21,648.53/32,476.98 = 8,320.52/x
  3. Step 3: Cross multiply
    21,648.53x = 32,476.98 × 8,320.52
  4. Step 4: Simplify right side
    21,648.53x = 270,225,199.24
  5. Step 5: Solve for x
    x = 270,225,199.24/21,648.53
  6. Step 6: Final answer
    x = 12,482.38

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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.