Home / 20,281.67-27,983.70-12,323.42

Finding the Fourth Proportional to 20,281.67, 27,983.70 and 12,323.42

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Solution

The fourth proportional to 20,281.67, 27,983.70 and 12,323.42 is: 17,003.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,281.67 : 27,983.70 = 12,323.42 : x
  2. Step 2: Convert to fraction form
    20,281.67/27,983.70 = 12,323.42/x
  3. Step 3: Cross multiply
    20,281.67x = 27,983.70 × 12,323.42
  4. Step 4: Simplify right side
    20,281.67x = 344,854,888.25
  5. Step 5: Solve for x
    x = 344,854,888.25/20,281.67
  6. Step 6: Final answer
    x = 17,003.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.