Home / 28,915.80-43,352.10-12,262.20

Finding the Fourth Proportional to 28,915.80, 43,352.10 and 12,262.20

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Solution

The fourth proportional to 28,915.80, 43,352.10 and 12,262.20 is: 18,384.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,915.80 : 43,352.10 = 12,262.20 : x
  2. Step 2: Convert to fraction form
    28,915.80/43,352.10 = 12,262.20/x
  3. Step 3: Cross multiply
    28,915.80x = 43,352.10 × 12,262.20
  4. Step 4: Simplify right side
    28,915.80x = 531,592,120.62
  5. Step 5: Solve for x
    x = 531,592,120.62/28,915.80
  6. Step 6: Final answer
    x = 18,384.14

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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.