Home / 12,419.28-17,141.04-7,117.65

Finding the Fourth Proportional to 12,419.28, 17,141.04 and 7,117.65

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Solution

The fourth proportional to 12,419.28, 17,141.04 and 7,117.65 is: 9,823.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,419.28 : 17,141.04 = 7,117.65 : x
  2. Step 2: Convert to fraction form
    12,419.28/17,141.04 = 7,117.65/x
  3. Step 3: Cross multiply
    12,419.28x = 17,141.04 × 7,117.65
  4. Step 4: Simplify right side
    12,419.28x = 122,003,923.36
  5. Step 5: Solve for x
    x = 122,003,923.36/12,419.28
  6. Step 6: Final answer
    x = 9,823.75

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Double scale
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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.