Home / 12,340.90-17,042.88-7,866.76

Finding the Fourth Proportional to 12,340.90, 17,042.88 and 7,866.76

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Solution

The fourth proportional to 12,340.90, 17,042.88 and 7,866.76 is: 10,864.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,340.90 : 17,042.88 = 7,866.76 : x
  2. Step 2: Convert to fraction form
    12,340.90/17,042.88 = 7,866.76/x
  3. Step 3: Cross multiply
    12,340.90x = 17,042.88 × 7,866.76
  4. Step 4: Simplify right side
    12,340.90x = 134,072,246.67
  5. Step 5: Solve for x
    x = 134,072,246.67/12,340.90
  6. Step 6: Final answer
    x = 10,864.06

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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.