Home / 27,756.06-38,303.28-15,819.90

Finding the Fourth Proportional to 27,756.06, 38,303.28 and 15,819.90

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Solution

The fourth proportional to 27,756.06, 38,303.28 and 15,819.90 is: 21,831.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,756.06 : 38,303.28 = 15,819.90 : x
  2. Step 2: Convert to fraction form
    27,756.06/38,303.28 = 15,819.90/x
  3. Step 3: Cross multiply
    27,756.06x = 38,303.28 × 15,819.90
  4. Step 4: Simplify right side
    27,756.06x = 605,954,059.27
  5. Step 5: Solve for x
    x = 605,954,059.27/27,756.06
  6. Step 6: Final answer
    x = 21,831.41

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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.