Home / 15,351.28-23,012.54-13,981.77

Finding the Fourth Proportional to 15,351.28, 23,012.54 and 13,981.77

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Solution

The fourth proportional to 15,351.28, 23,012.54 and 13,981.77 is: 20,959.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,351.28 : 23,012.54 = 13,981.77 : x
  2. Step 2: Convert to fraction form
    15,351.28/23,012.54 = 13,981.77/x
  3. Step 3: Cross multiply
    15,351.28x = 23,012.54 × 13,981.77
  4. Step 4: Simplify right side
    15,351.28x = 321,756,023.92
  5. Step 5: Solve for x
    x = 321,756,023.92/15,351.28
  6. Step 6: Final answer
    x = 20,959.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.