Home / 20,177.40-30,275.10-7,039.20

Finding the Fourth Proportional to 20,177.40, 30,275.10 and 7,039.20

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Solution

The fourth proportional to 20,177.40, 30,275.10 and 7,039.20 is: 10,561.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,177.40 : 30,275.10 = 7,039.20 : x
  2. Step 2: Convert to fraction form
    20,177.40/30,275.10 = 7,039.20/x
  3. Step 3: Cross multiply
    20,177.40x = 30,275.10 × 7,039.20
  4. Step 4: Simplify right side
    20,177.40x = 213,112,483.92
  5. Step 5: Solve for x
    x = 213,112,483.92/20,177.40
  6. Step 6: Final answer
    x = 10,561.94

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