Home / 20,045.07-27,658.87-12,876.57

Finding the Fourth Proportional to 20,045.07, 27,658.87 and 12,876.57

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Solution

The fourth proportional to 20,045.07, 27,658.87 and 12,876.57 is: 17,767.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,045.07 : 27,658.87 = 12,876.57 : x
  2. Step 2: Convert to fraction form
    20,045.07/27,658.87 = 12,876.57/x
  3. Step 3: Cross multiply
    20,045.07x = 27,658.87 × 12,876.57
  4. Step 4: Simplify right side
    20,045.07x = 356,151,343.48
  5. Step 5: Solve for x
    x = 356,151,343.48/20,045.07
  6. Step 6: Final answer
    x = 17,767.53

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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.