Home / 20,344.86-28,077.30-11,392.11

Finding the Fourth Proportional to 20,344.86, 28,077.30 and 11,392.11

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Solution

The fourth proportional to 20,344.86, 28,077.30 and 11,392.11 is: 15,721.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,344.86 : 28,077.30 = 11,392.11 : x
  2. Step 2: Convert to fraction form
    20,344.86/28,077.30 = 11,392.11/x
  3. Step 3: Cross multiply
    20,344.86x = 28,077.30 × 11,392.11
  4. Step 4: Simplify right side
    20,344.86x = 319,859,690.10
  5. Step 5: Solve for x
    x = 319,859,690.10/20,344.86
  6. Step 6: Final answer
    x = 15,721.89

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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.