Home / 13,102.89-18,081.45-7,134.63

Finding the Fourth Proportional to 13,102.89, 18,081.45 and 7,134.63

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Solution

The fourth proportional to 13,102.89, 18,081.45 and 7,134.63 is: 9,845.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,102.89 : 18,081.45 = 7,134.63 : x
  2. Step 2: Convert to fraction form
    13,102.89/18,081.45 = 7,134.63/x
  3. Step 3: Cross multiply
    13,102.89x = 18,081.45 × 7,134.63
  4. Step 4: Simplify right side
    13,102.89x = 129,004,455.61
  5. Step 5: Solve for x
    x = 129,004,455.61/13,102.89
  6. Step 6: Final answer
    x = 9,845.50

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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.