Home / 47,162.80-70,719.85-13,878.54

Finding the Fourth Proportional to 47,162.80, 70,719.85 and 13,878.54

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Solution

The fourth proportional to 47,162.80, 70,719.85 and 13,878.54 is: 20,810.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,162.80 : 70,719.85 = 13,878.54 : x
  2. Step 2: Convert to fraction form
    47,162.80/70,719.85 = 13,878.54/x
  3. Step 3: Cross multiply
    47,162.80x = 70,719.85 × 13,878.54
  4. Step 4: Simplify right side
    47,162.80x = 981,487,878.72
  5. Step 5: Solve for x
    x = 981,487,878.72/47,162.80
  6. Step 6: Final answer
    x = 20,810.64

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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.