Home / 13,156.53-18,157.26-7,189.10

Finding the Fourth Proportional to 13,156.53, 18,157.26 and 7,189.10

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Solution

The fourth proportional to 13,156.53, 18,157.26 and 7,189.10 is: 9,921.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,156.53 : 18,157.26 = 7,189.10 : x
  2. Step 2: Convert to fraction form
    13,156.53/18,157.26 = 7,189.10/x
  3. Step 3: Cross multiply
    13,156.53x = 18,157.26 × 7,189.10
  4. Step 4: Simplify right side
    13,156.53x = 130,534,267.08
  5. Step 5: Solve for x
    x = 130,534,267.08/13,156.53
  6. Step 6: Final answer
    x = 9,921.63

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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.