Home / 20,306.76-28,023.12-11,232.51

Finding the Fourth Proportional to 20,306.76, 28,023.12 and 11,232.51

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Solution

The fourth proportional to 20,306.76, 28,023.12 and 11,232.51 is: 15,500.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,306.76 : 28,023.12 = 11,232.51 : x
  2. Step 2: Convert to fraction form
    20,306.76/28,023.12 = 11,232.51/x
  3. Step 3: Cross multiply
    20,306.76x = 28,023.12 × 11,232.51
  4. Step 4: Simplify right side
    20,306.76x = 314,769,975.63
  5. Step 5: Solve for x
    x = 314,769,975.63/20,306.76
  6. Step 6: Final answer
    x = 15,500.75

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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.