Home / 10,519.20-15,779.52-4,279.14

Finding the Fourth Proportional to 10,519.20, 15,779.52 and 4,279.14

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Solution

The fourth proportional to 10,519.20, 15,779.52 and 4,279.14 is: 6,419.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,519.20 : 15,779.52 = 4,279.14 : x
  2. Step 2: Convert to fraction form
    10,519.20/15,779.52 = 4,279.14/x
  3. Step 3: Cross multiply
    10,519.20x = 15,779.52 × 4,279.14
  4. Step 4: Simplify right side
    10,519.20x = 67,522,775.21
  5. Step 5: Solve for x
    x = 67,522,775.21/10,519.20
  6. Step 6: Final answer
    x = 6,419.00

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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.