Home / 20,275.86-27,980.41-11,323.52

Finding the Fourth Proportional to 20,275.86, 27,980.41 and 11,323.52

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Solution

The fourth proportional to 20,275.86, 27,980.41 and 11,323.52 is: 15,626.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,275.86 : 27,980.41 = 11,323.52 : x
  2. Step 2: Convert to fraction form
    20,275.86/27,980.41 = 11,323.52/x
  3. Step 3: Cross multiply
    20,275.86x = 27,980.41 × 11,323.52
  4. Step 4: Simplify right side
    20,275.86x = 316,836,732.24
  5. Step 5: Solve for x
    x = 316,836,732.24/20,275.86
  6. Step 6: Final answer
    x = 15,626.30

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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.