Home / 20,045.94-27,675.96-12,878.76

Finding the Fourth Proportional to 20,045.94, 27,675.96 and 12,878.76

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Solution

The fourth proportional to 20,045.94, 27,675.96 and 12,878.76 is: 17,780.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,045.94 : 27,675.96 = 12,878.76 : x
  2. Step 2: Convert to fraction form
    20,045.94/27,675.96 = 12,878.76/x
  3. Step 3: Cross multiply
    20,045.94x = 27,675.96 × 12,878.76
  4. Step 4: Simplify right side
    20,045.94x = 356,432,046.61
  5. Step 5: Solve for x
    x = 356,432,046.61/20,045.94
  6. Step 6: Final answer
    x = 17,780.76

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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.