Home / 13,116.14-18,100.36-7,147.79

Finding the Fourth Proportional to 13,116.14, 18,100.36 and 7,147.79

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Solution

The fourth proportional to 13,116.14, 18,100.36 and 7,147.79 is: 9,864.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,116.14 : 18,100.36 = 7,147.79 : x
  2. Step 2: Convert to fraction form
    13,116.14/18,100.36 = 7,147.79/x
  3. Step 3: Cross multiply
    13,116.14x = 18,100.36 × 7,147.79
  4. Step 4: Simplify right side
    13,116.14x = 129,377,572.20
  5. Step 5: Solve for x
    x = 129,377,572.20/13,116.14
  6. Step 6: Final answer
    x = 9,864.00

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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.