Home / 21,180.28-31,751.52-8,041.84

Finding the Fourth Proportional to 21,180.28, 31,751.52 and 8,041.84

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Solution

The fourth proportional to 21,180.28, 31,751.52 and 8,041.84 is: 12,055.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,180.28 : 31,751.52 = 8,041.84 : x
  2. Step 2: Convert to fraction form
    21,180.28/31,751.52 = 8,041.84/x
  3. Step 3: Cross multiply
    21,180.28x = 31,751.52 × 8,041.84
  4. Step 4: Simplify right side
    21,180.28x = 255,340,643.60
  5. Step 5: Solve for x
    x = 255,340,643.60/21,180.28
  6. Step 6: Final answer
    x = 12,055.58

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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.