Home / 13,215.46-18,237.36-7,247.17

Finding the Fourth Proportional to 13,215.46, 18,237.36 and 7,247.17

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Solution

The fourth proportional to 13,215.46, 18,237.36 and 7,247.17 is: 10,001.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,215.46 : 18,237.36 = 7,247.17 : x
  2. Step 2: Convert to fraction form
    13,215.46/18,237.36 = 7,247.17/x
  3. Step 3: Cross multiply
    13,215.46x = 18,237.36 × 7,247.17
  4. Step 4: Simplify right side
    13,215.46x = 132,169,262.58
  5. Step 5: Solve for x
    x = 132,169,262.58/13,215.46
  6. Step 6: Final answer
    x = 10,001.11

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Half scale
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Double scale
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Similar ratio
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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.