Home / 13,117.65-18,101.72-7,149.27

Finding the Fourth Proportional to 13,117.65, 18,101.72 and 7,149.27

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Solution

The fourth proportional to 13,117.65, 18,101.72 and 7,149.27 is: 9,865.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,117.65 : 18,101.72 = 7,149.27 : x
  2. Step 2: Convert to fraction form
    13,117.65/18,101.72 = 7,149.27/x
  3. Step 3: Cross multiply
    13,117.65x = 18,101.72 × 7,149.27
  4. Step 4: Simplify right side
    13,117.65x = 129,414,048.00
  5. Step 5: Solve for x
    x = 129,414,048.00/13,117.65
  6. Step 6: Final answer
    x = 9,865.64

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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.