Home / 13,205.76-18,223.20-7,236.24

Finding the Fourth Proportional to 13,205.76, 18,223.20 and 7,236.24

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Solution

The fourth proportional to 13,205.76, 18,223.20 and 7,236.24 is: 9,985.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,205.76 : 18,223.20 = 7,236.24 : x
  2. Step 2: Convert to fraction form
    13,205.76/18,223.20 = 7,236.24/x
  3. Step 3: Cross multiply
    13,205.76x = 18,223.20 × 7,236.24
  4. Step 4: Simplify right side
    13,205.76x = 131,867,448.77
  5. Step 5: Solve for x
    x = 131,867,448.77/13,205.76
  6. Step 6: Final answer
    x = 9,985.60

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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.