Home / 13,125.44-18,113.19-7,157.22

Finding the Fourth Proportional to 13,125.44, 18,113.19 and 7,157.22

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Solution

The fourth proportional to 13,125.44, 18,113.19 and 7,157.22 is: 9,877.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,125.44 : 18,113.19 = 7,157.22 : x
  2. Step 2: Convert to fraction form
    13,125.44/18,113.19 = 7,157.22/x
  3. Step 3: Cross multiply
    13,125.44x = 18,113.19 × 7,157.22
  4. Step 4: Simplify right side
    13,125.44x = 129,640,085.73
  5. Step 5: Solve for x
    x = 129,640,085.73/13,125.44
  6. Step 6: Final answer
    x = 9,877.01

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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.