Home / 20,839.32-28,767.65-13,295.79

Finding the Fourth Proportional to 20,839.32, 28,767.65 and 13,295.79

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Solution

The fourth proportional to 20,839.32, 28,767.65 and 13,295.79 is: 18,354.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,839.32 : 28,767.65 = 13,295.79 : x
  2. Step 2: Convert to fraction form
    20,839.32/28,767.65 = 13,295.79/x
  3. Step 3: Cross multiply
    20,839.32x = 28,767.65 × 13,295.79
  4. Step 4: Simplify right side
    20,839.32x = 382,488,566.71
  5. Step 5: Solve for x
    x = 382,488,566.71/20,839.32
  6. Step 6: Final answer
    x = 18,354.18

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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.