Home / 28,348.40-42,522.62-12,747.80

Finding the Fourth Proportional to 28,348.40, 42,522.62 and 12,747.80

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Solution

The fourth proportional to 28,348.40, 42,522.62 and 12,747.80 is: 19,121.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,348.40 : 42,522.62 = 12,747.80 : x
  2. Step 2: Convert to fraction form
    28,348.40/42,522.62 = 12,747.80/x
  3. Step 3: Cross multiply
    28,348.40x = 42,522.62 × 12,747.80
  4. Step 4: Simplify right side
    28,348.40x = 542,069,578.88
  5. Step 5: Solve for x
    x = 542,069,578.88/28,348.40
  6. Step 6: Final answer
    x = 19,121.70

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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.