Home / 12,730.34-17,571.21-7,143.14

Finding the Fourth Proportional to 12,730.34, 17,571.21 and 7,143.14

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Solution

The fourth proportional to 12,730.34, 17,571.21 and 7,143.14 is: 9,859.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,730.34 : 17,571.21 = 7,143.14 : x
  2. Step 2: Convert to fraction form
    12,730.34/17,571.21 = 7,143.14/x
  3. Step 3: Cross multiply
    12,730.34x = 17,571.21 × 7,143.14
  4. Step 4: Simplify right side
    12,730.34x = 125,513,613.00
  5. Step 5: Solve for x
    x = 125,513,613.00/12,730.34
  6. Step 6: Final answer
    x = 9,859.41

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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.