Home / 13,851.38-19,120.20-9,398.18

Finding the Fourth Proportional to 13,851.38, 19,120.20 and 9,398.18

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Solution

The fourth proportional to 13,851.38, 19,120.20 and 9,398.18 is: 12,973.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,851.38 : 19,120.20 = 9,398.18 : x
  2. Step 2: Convert to fraction form
    13,851.38/19,120.20 = 9,398.18/x
  3. Step 3: Cross multiply
    13,851.38x = 19,120.20 × 9,398.18
  4. Step 4: Simplify right side
    13,851.38x = 179,695,081.24
  5. Step 5: Solve for x
    x = 179,695,081.24/13,851.38
  6. Step 6: Final answer
    x = 12,973.08

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Half scale
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Double scale
Find fourth proportional to 13,852.38, 19,121.58 and 9,399.18
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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.