Home / 10,305.20-14,221.14-5,589.47

Finding the Fourth Proportional to 10,305.20, 14,221.14 and 5,589.47

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Solution

The fourth proportional to 10,305.20, 14,221.14 and 5,589.47 is: 7,713.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,305.20 : 14,221.14 = 5,589.47 : x
  2. Step 2: Convert to fraction form
    10,305.20/14,221.14 = 5,589.47/x
  3. Step 3: Cross multiply
    10,305.20x = 14,221.14 × 5,589.47
  4. Step 4: Simplify right side
    10,305.20x = 79,488,635.40
  5. Step 5: Solve for x
    x = 79,488,635.40/10,305.20
  6. Step 6: Final answer
    x = 7,713.45

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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.