Home / 13,215.34-18,237.42-7,246.65

Finding the Fourth Proportional to 13,215.34, 18,237.42 and 7,246.65

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Solution

The fourth proportional to 13,215.34, 18,237.42 and 7,246.65 is: 10,000.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,215.34 : 18,237.42 = 7,246.65 : x
  2. Step 2: Convert to fraction form
    13,215.34/18,237.42 = 7,246.65/x
  3. Step 3: Cross multiply
    13,215.34x = 18,237.42 × 7,246.65
  4. Step 4: Simplify right side
    13,215.34x = 132,160,163.41
  5. Step 5: Solve for x
    x = 132,160,163.41/13,215.34
  6. Step 6: Final answer
    x = 10,000.52

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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.