Home / 20,632.29-28,472.01-11,680.63

Finding the Fourth Proportional to 20,632.29, 28,472.01 and 11,680.63

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Solution

The fourth proportional to 20,632.29, 28,472.01 and 11,680.63 is: 16,118.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,632.29 : 28,472.01 = 11,680.63 : x
  2. Step 2: Convert to fraction form
    20,632.29/28,472.01 = 11,680.63/x
  3. Step 3: Cross multiply
    20,632.29x = 28,472.01 × 11,680.63
  4. Step 4: Simplify right side
    20,632.29x = 332,570,979.26
  5. Step 5: Solve for x
    x = 332,570,979.26/20,632.29
  6. Step 6: Final answer
    x = 16,118.95

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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.