Home / 20,326.40-28,050.41-11,376

Finding the Fourth Proportional to 20,326.40, 28,050.41 and 11,376

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Solution

The fourth proportional to 20,326.40, 28,050.41 and 11,376 is: 15,698.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,326.40 : 28,050.41 = 11,376 : x
  2. Step 2: Convert to fraction form
    20,326.40/28,050.41 = 11,376/x
  3. Step 3: Cross multiply
    20,326.40x = 28,050.41 × 11,376
  4. Step 4: Simplify right side
    20,326.40x = 319,101,407.28
  5. Step 5: Solve for x
    x = 319,101,407.28/20,326.40
  6. Step 6: Final answer
    x = 15,698.87

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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.