Home / 14,375.20-21,562.80-12,647.20

Finding the Fourth Proportional to 14,375.20, 21,562.80 and 12,647.20

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Solution

The fourth proportional to 14,375.20, 21,562.80 and 12,647.20 is: 18,970.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,375.20 : 21,562.80 = 12,647.20 : x
  2. Step 2: Convert to fraction form
    14,375.20/21,562.80 = 12,647.20/x
  3. Step 3: Cross multiply
    14,375.20x = 21,562.80 × 12,647.20
  4. Step 4: Simplify right side
    14,375.20x = 272,709,044.16
  5. Step 5: Solve for x
    x = 272,709,044.16/14,375.20
  6. Step 6: Final answer
    x = 18,970.80

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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.