Home / 20,852.80-31,279.52-7,001.92

Finding the Fourth Proportional to 20,852.80, 31,279.52 and 7,001.92

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Solution

The fourth proportional to 20,852.80, 31,279.52 and 7,001.92 is: 10,502.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,852.80 : 31,279.52 = 7,001.92 : x
  2. Step 2: Convert to fraction form
    20,852.80/31,279.52 = 7,001.92/x
  3. Step 3: Cross multiply
    20,852.80x = 31,279.52 × 7,001.92
  4. Step 4: Simplify right side
    20,852.80x = 219,016,696.68
  5. Step 5: Solve for x
    x = 219,016,696.68/20,852.80
  6. Step 6: Final answer
    x = 10,502.99

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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.