Home / 20,901.56-31,345.97-7,572.96

Finding the Fourth Proportional to 20,901.56, 31,345.97 and 7,572.96

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Solution

The fourth proportional to 20,901.56, 31,345.97 and 7,572.96 is: 11,357.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,901.56 : 31,345.97 = 7,572.96 : x
  2. Step 2: Convert to fraction form
    20,901.56/31,345.97 = 7,572.96/x
  3. Step 3: Cross multiply
    20,901.56x = 31,345.97 × 7,572.96
  4. Step 4: Simplify right side
    20,901.56x = 237,381,739.11
  5. Step 5: Solve for x
    x = 237,381,739.11/20,901.56
  6. Step 6: Final answer
    x = 11,357.13

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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.