Home / 19,878.48-29,816.19-8,785.53

Finding the Fourth Proportional to 19,878.48, 29,816.19 and 8,785.53

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Solution

The fourth proportional to 19,878.48, 29,816.19 and 8,785.53 is: 13,177.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,878.48 : 29,816.19 = 8,785.53 : x
  2. Step 2: Convert to fraction form
    19,878.48/29,816.19 = 8,785.53/x
  3. Step 3: Cross multiply
    19,878.48x = 29,816.19 × 8,785.53
  4. Step 4: Simplify right side
    19,878.48x = 261,951,031.73
  5. Step 5: Solve for x
    x = 261,951,031.73/19,878.48
  6. Step 6: Final answer
    x = 13,177.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.