Home / 19,878.24-27,404.94-15,011.70

Finding the Fourth Proportional to 19,878.24, 27,404.94 and 15,011.70

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Solution

The fourth proportional to 19,878.24, 27,404.94 and 15,011.70 is: 20,695.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,878.24 : 27,404.94 = 15,011.70 : x
  2. Step 2: Convert to fraction form
    19,878.24/27,404.94 = 15,011.70/x
  3. Step 3: Cross multiply
    19,878.24x = 27,404.94 × 15,011.70
  4. Step 4: Simplify right side
    19,878.24x = 411,394,737.80
  5. Step 5: Solve for x
    x = 411,394,737.80/19,878.24
  6. Step 6: Final answer
    x = 20,695.73

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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.