Home / 18,908.13-28,363.59-5,760.53

Finding the Fourth Proportional to 18,908.13, 28,363.59 and 5,760.53

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Solution

The fourth proportional to 18,908.13, 28,363.59 and 5,760.53 is: 8,641.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,908.13 : 28,363.59 = 5,760.53 : x
  2. Step 2: Convert to fraction form
    18,908.13/28,363.59 = 5,760.53/x
  3. Step 3: Cross multiply
    18,908.13x = 28,363.59 × 5,760.53
  4. Step 4: Simplify right side
    18,908.13x = 163,389,169.28
  5. Step 5: Solve for x
    x = 163,389,169.28/18,908.13
  6. Step 6: Final answer
    x = 8,641.21

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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.