Home / 20,842.67-28,763.61-11,411.30

Finding the Fourth Proportional to 20,842.67, 28,763.61 and 11,411.30

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Solution

The fourth proportional to 20,842.67, 28,763.61 and 11,411.30 is: 15,747.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,842.67 : 28,763.61 = 11,411.30 : x
  2. Step 2: Convert to fraction form
    20,842.67/28,763.61 = 11,411.30/x
  3. Step 3: Cross multiply
    20,842.67x = 28,763.61 × 11,411.30
  4. Step 4: Simplify right side
    20,842.67x = 328,230,182.79
  5. Step 5: Solve for x
    x = 328,230,182.79/20,842.67
  6. Step 6: Final answer
    x = 15,747.99

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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.