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Finding the Fourth Proportional to 23,470.76, 32,378.79 and 20,784.71

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Solution

The fourth proportional to 23,470.76, 32,378.79 and 20,784.71 is: 28,673.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,470.76 : 32,378.79 = 20,784.71 : x
  2. Step 2: Convert to fraction form
    23,470.76/32,378.79 = 20,784.71/x
  3. Step 3: Cross multiply
    23,470.76x = 32,378.79 × 20,784.71
  4. Step 4: Simplify right side
    23,470.76x = 672,983,763.31
  5. Step 5: Solve for x
    x = 672,983,763.31/23,470.76
  6. Step 6: Final answer
    x = 28,673.29

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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.