Home / 12,937.68-19,406.36-9,122.61

Finding the Fourth Proportional to 12,937.68, 19,406.36 and 9,122.61

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Solution

The fourth proportional to 12,937.68, 19,406.36 and 9,122.61 is: 13,683.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,937.68 : 19,406.36 = 9,122.61 : x
  2. Step 2: Convert to fraction form
    12,937.68/19,406.36 = 9,122.61/x
  3. Step 3: Cross multiply
    12,937.68x = 19,406.36 × 9,122.61
  4. Step 4: Simplify right side
    12,937.68x = 177,036,653.80
  5. Step 5: Solve for x
    x = 177,036,653.80/12,937.68
  6. Step 6: Final answer
    x = 13,683.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.