Home / 20,901.57-31,351.23-15,285.03

Finding the Fourth Proportional to 20,901.57, 31,351.23 and 15,285.03

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Solution

The fourth proportional to 20,901.57, 31,351.23 and 15,285.03 is: 22,926.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,901.57 : 31,351.23 = 15,285.03 : x
  2. Step 2: Convert to fraction form
    20,901.57/31,351.23 = 15,285.03/x
  3. Step 3: Cross multiply
    20,901.57x = 31,351.23 × 15,285.03
  4. Step 4: Simplify right side
    20,901.57x = 479,204,491.09
  5. Step 5: Solve for x
    x = 479,204,491.09/20,901.57
  6. Step 6: Final answer
    x = 22,926.72

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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.