Home / 20,712.04-31,045.72-10,169.80

Finding the Fourth Proportional to 20,712.04, 31,045.72 and 10,169.80

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Solution

The fourth proportional to 20,712.04, 31,045.72 and 10,169.80 is: 15,243.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,712.04 : 31,045.72 = 10,169.80 : x
  2. Step 2: Convert to fraction form
    20,712.04/31,045.72 = 10,169.80/x
  3. Step 3: Cross multiply
    20,712.04x = 31,045.72 × 10,169.80
  4. Step 4: Simplify right side
    20,712.04x = 315,728,763.26
  5. Step 5: Solve for x
    x = 315,728,763.26/20,712.04
  6. Step 6: Final answer
    x = 15,243.73

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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.