Home / 12,810.36-17,677.56-7,144.92

Finding the Fourth Proportional to 12,810.36, 17,677.56 and 7,144.92

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Solution

The fourth proportional to 12,810.36, 17,677.56 and 7,144.92 is: 9,859.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,810.36 : 17,677.56 = 7,144.92 : x
  2. Step 2: Convert to fraction form
    12,810.36/17,677.56 = 7,144.92/x
  3. Step 3: Cross multiply
    12,810.36x = 17,677.56 × 7,144.92
  4. Step 4: Simplify right side
    12,810.36x = 126,304,752.00
  5. Step 5: Solve for x
    x = 126,304,752.00/12,810.36
  6. Step 6: Final answer
    x = 9,859.58

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Half scale
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Double scale
Find fourth proportional to 12,811.36, 17,678.94 and 7,145.92
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.