Home / 12,426.61-17,149.20-7,122.45

Finding the Fourth Proportional to 12,426.61, 17,149.20 and 7,122.45

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Solution

The fourth proportional to 12,426.61, 17,149.20 and 7,122.45 is: 9,829.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,426.61 : 17,149.20 = 7,122.45 : x
  2. Step 2: Convert to fraction form
    12,426.61/17,149.20 = 7,122.45/x
  3. Step 3: Cross multiply
    12,426.61x = 17,149.20 × 7,122.45
  4. Step 4: Simplify right side
    12,426.61x = 122,144,283.93
  5. Step 5: Solve for x
    x = 122,144,283.93/12,426.61
  6. Step 6: Final answer
    x = 9,829.25

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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.