Home / 20,731.04-31,082-10,335.52

Finding the Fourth Proportional to 20,731.04, 31,082 and 10,335.52

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Solution

The fourth proportional to 20,731.04, 31,082 and 10,335.52 is: 15,496.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,731.04 : 31,082 = 10,335.52 : x
  2. Step 2: Convert to fraction form
    20,731.04/31,082 = 10,335.52/x
  3. Step 3: Cross multiply
    20,731.04x = 31,082 × 10,335.52
  4. Step 4: Simplify right side
    20,731.04x = 321,248,632.64
  5. Step 5: Solve for x
    x = 321,248,632.64/20,731.04
  6. Step 6: Final answer
    x = 15,496.02

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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.