Home / 19,287.20-28,932.60-5,435.84

Finding the Fourth Proportional to 19,287.20, 28,932.60 and 5,435.84

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Solution

The fourth proportional to 19,287.20, 28,932.60 and 5,435.84 is: 8,154.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,287.20 : 28,932.60 = 5,435.84 : x
  2. Step 2: Convert to fraction form
    19,287.20/28,932.60 = 5,435.84/x
  3. Step 3: Cross multiply
    19,287.20x = 28,932.60 × 5,435.84
  4. Step 4: Simplify right side
    19,287.20x = 157,272,984.38
  5. Step 5: Solve for x
    x = 157,272,984.38/19,287.20
  6. Step 6: Final answer
    x = 8,154.27

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1.5x scale

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.