Home / 13,290.76-18,340.76-7,322.30

Finding the Fourth Proportional to 13,290.76, 18,340.76 and 7,322.30

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Solution

The fourth proportional to 13,290.76, 18,340.76 and 7,322.30 is: 10,104.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,290.76 : 18,340.76 = 7,322.30 : x
  2. Step 2: Convert to fraction form
    13,290.76/18,340.76 = 7,322.30/x
  3. Step 3: Cross multiply
    13,290.76x = 18,340.76 × 7,322.30
  4. Step 4: Simplify right side
    13,290.76x = 134,296,546.95
  5. Step 5: Solve for x
    x = 134,296,546.95/13,290.76
  6. Step 6: Final answer
    x = 10,104.50

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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.