Home / 20,339.43-28,068.12-11,386.89

Finding the Fourth Proportional to 20,339.43, 28,068.12 and 11,386.89

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Solution

The fourth proportional to 20,339.43, 28,068.12 and 11,386.89 is: 15,713.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,339.43 : 28,068.12 = 11,386.89 : x
  2. Step 2: Convert to fraction form
    20,339.43/28,068.12 = 11,386.89/x
  3. Step 3: Cross multiply
    20,339.43x = 28,068.12 × 11,386.89
  4. Step 4: Simplify right side
    20,339.43x = 319,608,594.95
  5. Step 5: Solve for x
    x = 319,608,594.95/20,339.43
  6. Step 6: Final answer
    x = 15,713.74

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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.