Home / 13,117.44-18,101.07-7,148.76

Finding the Fourth Proportional to 13,117.44, 18,101.07 and 7,148.76

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Solution

The fourth proportional to 13,117.44, 18,101.07 and 7,148.76 is: 9,864.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,117.44 : 18,101.07 = 7,148.76 : x
  2. Step 2: Convert to fraction form
    13,117.44/18,101.07 = 7,148.76/x
  3. Step 3: Cross multiply
    13,117.44x = 18,101.07 × 7,148.76
  4. Step 4: Simplify right side
    13,117.44x = 129,400,137.29
  5. Step 5: Solve for x
    x = 129,400,137.29/13,117.44
  6. Step 6: Final answer
    x = 9,864.74

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Half scale
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Double scale
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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.