Home / 20,752.38-28,639.30-11,680.58

Finding the Fourth Proportional to 20,752.38, 28,639.30 and 11,680.58

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Solution

The fourth proportional to 20,752.38, 28,639.30 and 11,680.58 is: 16,119.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,752.38 : 28,639.30 = 11,680.58 : x
  2. Step 2: Convert to fraction form
    20,752.38/28,639.30 = 11,680.58/x
  3. Step 3: Cross multiply
    20,752.38x = 28,639.30 × 11,680.58
  4. Step 4: Simplify right side
    20,752.38x = 334,523,634.79
  5. Step 5: Solve for x
    x = 334,523,634.79/20,752.38
  6. Step 6: Final answer
    x = 16,119.77

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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.