Home / 18,947.66-28,385.10-10,602.38

Finding the Fourth Proportional to 18,947.66, 28,385.10 and 10,602.38

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Solution

The fourth proportional to 18,947.66, 28,385.10 and 10,602.38 is: 15,883.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,947.66 : 28,385.10 = 10,602.38 : x
  2. Step 2: Convert to fraction form
    18,947.66/28,385.10 = 10,602.38/x
  3. Step 3: Cross multiply
    18,947.66x = 28,385.10 × 10,602.38
  4. Step 4: Simplify right side
    18,947.66x = 300,949,687.50
  5. Step 5: Solve for x
    x = 300,949,687.50/18,947.66
  6. Step 6: Final answer
    x = 15,883.22

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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.