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Finding the Fourth Proportional to 23,872.40, 35,808.60 and 12,813.20

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Solution

The fourth proportional to 23,872.40, 35,808.60 and 12,813.20 is: 19,219.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,872.40 : 35,808.60 = 12,813.20 : x
  2. Step 2: Convert to fraction form
    23,872.40/35,808.60 = 12,813.20/x
  3. Step 3: Cross multiply
    23,872.40x = 35,808.60 × 12,813.20
  4. Step 4: Simplify right side
    23,872.40x = 458,822,753.52
  5. Step 5: Solve for x
    x = 458,822,753.52/23,872.40
  6. Step 6: Final answer
    x = 19,219.80

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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.