Home / 12,426.81-17,148.90-6,761.56

Finding the Fourth Proportional to 12,426.81, 17,148.90 and 6,761.56

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Solution

The fourth proportional to 12,426.81, 17,148.90 and 6,761.56 is: 9,330.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,426.81 : 17,148.90 = 6,761.56 : x
  2. Step 2: Convert to fraction form
    12,426.81/17,148.90 = 6,761.56/x
  3. Step 3: Cross multiply
    12,426.81x = 17,148.90 × 6,761.56
  4. Step 4: Simplify right side
    12,426.81x = 115,953,316.28
  5. Step 5: Solve for x
    x = 115,953,316.28/12,426.81
  6. Step 6: Final answer
    x = 9,330.90

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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.