Home / 18,947.84-28,387.71-11,152.40

Finding the Fourth Proportional to 18,947.84, 28,387.71 and 11,152.40

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Solution

The fourth proportional to 18,947.84, 28,387.71 and 11,152.40 is: 16,708.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,947.84 : 28,387.71 = 11,152.40 : x
  2. Step 2: Convert to fraction form
    18,947.84/28,387.71 = 11,152.40/x
  3. Step 3: Cross multiply
    18,947.84x = 28,387.71 × 11,152.40
  4. Step 4: Simplify right side
    18,947.84x = 316,591,097.00
  5. Step 5: Solve for x
    x = 316,591,097.00/18,947.84
  6. Step 6: Final answer
    x = 16,708.56

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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.