Home / 17,920.50-26,885.28-12,665.84

Finding the Fourth Proportional to 17,920.50, 26,885.28 and 12,665.84

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Solution

The fourth proportional to 17,920.50, 26,885.28 and 12,665.84 is: 19,001.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,920.50 : 26,885.28 = 12,665.84 : x
  2. Step 2: Convert to fraction form
    17,920.50/26,885.28 = 12,665.84/x
  3. Step 3: Cross multiply
    17,920.50x = 26,885.28 × 12,665.84
  4. Step 4: Simplify right side
    17,920.50x = 340,524,654.84
  5. Step 5: Solve for x
    x = 340,524,654.84/17,920.50
  6. Step 6: Final answer
    x = 19,001.96

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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.