Home / 10,140.81-13,991.25-5,891.04

Finding the Fourth Proportional to 10,140.81, 13,991.25 and 5,891.04

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Solution

The fourth proportional to 10,140.81, 13,991.25 and 5,891.04 is: 8,127.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,140.81 : 13,991.25 = 5,891.04 : x
  2. Step 2: Convert to fraction form
    10,140.81/13,991.25 = 5,891.04/x
  3. Step 3: Cross multiply
    10,140.81x = 13,991.25 × 5,891.04
  4. Step 4: Simplify right side
    10,140.81x = 82,423,035.49
  5. Step 5: Solve for x
    x = 82,423,035.49/10,140.81
  6. Step 6: Final answer
    x = 8,127.86

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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.