Home / 10,305.20-14,231.28-7,126.64

Finding the Fourth Proportional to 10,305.20, 14,231.28 and 7,126.64

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Solution

The fourth proportional to 10,305.20, 14,231.28 and 7,126.64 is: 9,841.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,305.20 : 14,231.28 = 7,126.64 : x
  2. Step 2: Convert to fraction form
    10,305.20/14,231.28 = 7,126.64/x
  3. Step 3: Cross multiply
    10,305.20x = 14,231.28 × 7,126.64
  4. Step 4: Simplify right side
    10,305.20x = 101,421,209.30
  5. Step 5: Solve for x
    x = 101,421,209.30/10,305.20
  6. Step 6: Final answer
    x = 9,841.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.