Home / 12,426.40-17,148.30-6,761.32

Finding the Fourth Proportional to 12,426.40, 17,148.30 and 6,761.32

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Solution

The fourth proportional to 12,426.40, 17,148.30 and 6,761.32 is: 9,330.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,426.40 : 17,148.30 = 6,761.32 : x
  2. Step 2: Convert to fraction form
    12,426.40/17,148.30 = 6,761.32/x
  3. Step 3: Cross multiply
    12,426.40x = 17,148.30 × 6,761.32
  4. Step 4: Simplify right side
    12,426.40x = 115,945,143.76
  5. Step 5: Solve for x
    x = 115,945,143.76/12,426.40
  6. Step 6: Final answer
    x = 9,330.55

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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.