Home / 20,523.71-28,323.05-11,571.65

Finding the Fourth Proportional to 20,523.71, 28,323.05 and 11,571.65

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Solution

The fourth proportional to 20,523.71, 28,323.05 and 11,571.65 is: 15,969.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,523.71 : 28,323.05 = 11,571.65 : x
  2. Step 2: Convert to fraction form
    20,523.71/28,323.05 = 11,571.65/x
  3. Step 3: Cross multiply
    20,523.71x = 28,323.05 × 11,571.65
  4. Step 4: Simplify right side
    20,523.71x = 327,744,434.48
  5. Step 5: Solve for x
    x = 327,744,434.48/20,523.71
  6. Step 6: Final answer
    x = 15,969.07

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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.