Home / 12,516.51-17,270.19-7,478.85

Finding the Fourth Proportional to 12,516.51, 17,270.19 and 7,478.85

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Solution

The fourth proportional to 12,516.51, 17,270.19 and 7,478.85 is: 10,319.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,516.51 : 17,270.19 = 7,478.85 : x
  2. Step 2: Convert to fraction form
    12,516.51/17,270.19 = 7,478.85/x
  3. Step 3: Cross multiply
    12,516.51x = 17,270.19 × 7,478.85
  4. Step 4: Simplify right side
    12,516.51x = 129,161,160.48
  5. Step 5: Solve for x
    x = 129,161,160.48/12,516.51
  6. Step 6: Final answer
    x = 10,319.26

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Half scale
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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.