Home / 20,875.80-31,313.70-7,034.52

Finding the Fourth Proportional to 20,875.80, 31,313.70 and 7,034.52

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Solution

The fourth proportional to 20,875.80, 31,313.70 and 7,034.52 is: 10,551.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,875.80 : 31,313.70 = 7,034.52 : x
  2. Step 2: Convert to fraction form
    20,875.80/31,313.70 = 7,034.52/x
  3. Step 3: Cross multiply
    20,875.80x = 31,313.70 × 7,034.52
  4. Step 4: Simplify right side
    20,875.80x = 220,276,848.92
  5. Step 5: Solve for x
    x = 220,276,848.92/20,875.80
  6. Step 6: Final answer
    x = 10,551.78

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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.