Home / 20,423.41-28,182.96-11,470.72

Finding the Fourth Proportional to 20,423.41, 28,182.96 and 11,470.72

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Solution

The fourth proportional to 20,423.41, 28,182.96 and 11,470.72 is: 15,828.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,423.41 : 28,182.96 = 11,470.72 : x
  2. Step 2: Convert to fraction form
    20,423.41/28,182.96 = 11,470.72/x
  3. Step 3: Cross multiply
    20,423.41x = 28,182.96 × 11,470.72
  4. Step 4: Simplify right side
    20,423.41x = 323,278,842.93
  5. Step 5: Solve for x
    x = 323,278,842.93/20,423.41
  6. Step 6: Final answer
    x = 15,828.84

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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.