Home / 22,143.38-30,558.47-12,712.55

Finding the Fourth Proportional to 22,143.38, 30,558.47 and 12,712.55

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Solution

The fourth proportional to 22,143.38, 30,558.47 and 12,712.55 is: 17,543.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,143.38 : 30,558.47 = 12,712.55 : x
  2. Step 2: Convert to fraction form
    22,143.38/30,558.47 = 12,712.55/x
  3. Step 3: Cross multiply
    22,143.38x = 30,558.47 × 12,712.55
  4. Step 4: Simplify right side
    22,143.38x = 388,475,861.44
  5. Step 5: Solve for x
    x = 388,475,861.44/22,143.38
  6. Step 6: Final answer
    x = 17,543.66

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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.