Home / 22,926.86-31,639.87-12,855.43

Finding the Fourth Proportional to 22,926.86, 31,639.87 and 12,855.43

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Solution

The fourth proportional to 22,926.86, 31,639.87 and 12,855.43 is: 17,740.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,926.86 : 31,639.87 = 12,855.43 : x
  2. Step 2: Convert to fraction form
    22,926.86/31,639.87 = 12,855.43/x
  3. Step 3: Cross multiply
    22,926.86x = 31,639.87 × 12,855.43
  4. Step 4: Simplify right side
    22,926.86x = 406,743,939.33
  5. Step 5: Solve for x
    x = 406,743,939.33/22,926.86
  6. Step 6: Final answer
    x = 17,740.93

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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.