Home / 47,155.92-70,736.88-13,875.36

Finding the Fourth Proportional to 47,155.92, 70,736.88 and 13,875.36

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Solution

The fourth proportional to 47,155.92, 70,736.88 and 13,875.36 is: 20,813.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,155.92 : 70,736.88 = 13,875.36 : x
  2. Step 2: Convert to fraction form
    47,155.92/70,736.88 = 13,875.36/x
  3. Step 3: Cross multiply
    47,155.92x = 70,736.88 × 13,875.36
  4. Step 4: Simplify right side
    47,155.92x = 981,499,675.28
  5. Step 5: Solve for x
    x = 981,499,675.28/47,155.92
  6. Step 6: Final answer
    x = 20,813.92

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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.