Home / 21,425.84-32,135.60-12,545.28

Finding the Fourth Proportional to 21,425.84, 32,135.60 and 12,545.28

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Solution

The fourth proportional to 21,425.84, 32,135.60 and 12,545.28 is: 18,816.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,425.84 : 32,135.60 = 12,545.28 : x
  2. Step 2: Convert to fraction form
    21,425.84/32,135.60 = 12,545.28/x
  3. Step 3: Cross multiply
    21,425.84x = 32,135.60 × 12,545.28
  4. Step 4: Simplify right side
    21,425.84x = 403,150,099.97
  5. Step 5: Solve for x
    x = 403,150,099.97/21,425.84
  6. Step 6: Final answer
    x = 18,816.07

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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.