Home / 10,561.20-15,837.80-4,317.86

Finding the Fourth Proportional to 10,561.20, 15,837.80 and 4,317.86

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Solution

The fourth proportional to 10,561.20, 15,837.80 and 4,317.86 is: 6,475.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,561.20 : 15,837.80 = 4,317.86 : x
  2. Step 2: Convert to fraction form
    10,561.20/15,837.80 = 4,317.86/x
  3. Step 3: Cross multiply
    10,561.20x = 15,837.80 × 4,317.86
  4. Step 4: Simplify right side
    10,561.20x = 68,385,403.11
  5. Step 5: Solve for x
    x = 68,385,403.11/10,561.20
  6. Step 6: Final answer
    x = 6,475.15

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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.