Home / 13,074.90-18,047.49-8,359.20

Finding the Fourth Proportional to 13,074.90, 18,047.49 and 8,359.20

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Solution

The fourth proportional to 13,074.90, 18,047.49 and 8,359.20 is: 11,538.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,074.90 : 18,047.49 = 8,359.20 : x
  2. Step 2: Convert to fraction form
    13,074.90/18,047.49 = 8,359.20/x
  3. Step 3: Cross multiply
    13,074.90x = 18,047.49 × 8,359.20
  4. Step 4: Simplify right side
    13,074.90x = 150,862,578.41
  5. Step 5: Solve for x
    x = 150,862,578.41/13,074.90
  6. Step 6: Final answer
    x = 11,538.34

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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.