Home / 13,237.20-18,275.89-8,206.76

Finding the Fourth Proportional to 13,237.20, 18,275.89 and 8,206.76

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Solution

The fourth proportional to 13,237.20, 18,275.89 and 8,206.76 is: 11,330.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,237.20 : 18,275.89 = 8,206.76 : x
  2. Step 2: Convert to fraction form
    13,237.20/18,275.89 = 8,206.76/x
  3. Step 3: Cross multiply
    13,237.20x = 18,275.89 × 8,206.76
  4. Step 4: Simplify right side
    13,237.20x = 149,985,868.19
  5. Step 5: Solve for x
    x = 149,985,868.19/13,237.20
  6. Step 6: Final answer
    x = 11,330.63

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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.