Home / 10,065.76-13,890.68-5,589.36

Finding the Fourth Proportional to 10,065.76, 13,890.68 and 5,589.36

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Solution

The fourth proportional to 10,065.76, 13,890.68 and 5,589.36 is: 7,713.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,065.76 : 13,890.68 = 5,589.36 : x
  2. Step 2: Convert to fraction form
    10,065.76/13,890.68 = 5,589.36/x
  3. Step 3: Cross multiply
    10,065.76x = 13,890.68 × 5,589.36
  4. Step 4: Simplify right side
    10,065.76x = 77,640,011.16
  5. Step 5: Solve for x
    x = 77,640,011.16/10,065.76
  6. Step 6: Final answer
    x = 7,713.28

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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.