Home / 18,963.14-28,432.56-7,877.48

Finding the Fourth Proportional to 18,963.14, 28,432.56 and 7,877.48

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Solution

The fourth proportional to 18,963.14, 28,432.56 and 7,877.48 is: 11,811.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,963.14 : 28,432.56 = 7,877.48 : x
  2. Step 2: Convert to fraction form
    18,963.14/28,432.56 = 7,877.48/x
  3. Step 3: Cross multiply
    18,963.14x = 28,432.56 × 7,877.48
  4. Step 4: Simplify right side
    18,963.14x = 223,976,922.75
  5. Step 5: Solve for x
    x = 223,976,922.75/18,963.14
  6. Step 6: Final answer
    x = 11,811.17

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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.