Home / 10,255.16-15,377.88-5,319.86

Finding the Fourth Proportional to 10,255.16, 15,377.88 and 5,319.86

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Solution

The fourth proportional to 10,255.16, 15,377.88 and 5,319.86 is: 7,977.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,255.16 : 15,377.88 = 5,319.86 : x
  2. Step 2: Convert to fraction form
    10,255.16/15,377.88 = 5,319.86/x
  3. Step 3: Cross multiply
    10,255.16x = 15,377.88 × 5,319.86
  4. Step 4: Simplify right side
    10,255.16x = 81,808,168.70
  5. Step 5: Solve for x
    x = 81,808,168.70/10,255.16
  6. Step 6: Final answer
    x = 7,977.27

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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.