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Finding the Fourth Proportional to 29,943.60, 44,915.40 and 18,862.80

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Solution

The fourth proportional to 29,943.60, 44,915.40 and 18,862.80 is: 28,294.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,943.60 : 44,915.40 = 18,862.80 : x
  2. Step 2: Convert to fraction form
    29,943.60/44,915.40 = 18,862.80/x
  3. Step 3: Cross multiply
    29,943.60x = 44,915.40 × 18,862.80
  4. Step 4: Simplify right side
    29,943.60x = 847,230,207.12
  5. Step 5: Solve for x
    x = 847,230,207.12/29,943.60
  6. Step 6: Final answer
    x = 28,294.20

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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.