Home / 18,721.91-28,073.47-6,237.54

Finding the Fourth Proportional to 18,721.91, 28,073.47 and 6,237.54

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Solution

The fourth proportional to 18,721.91, 28,073.47 and 6,237.54 is: 9,353.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,721.91 : 28,073.47 = 6,237.54 : x
  2. Step 2: Convert to fraction form
    18,721.91/28,073.47 = 6,237.54/x
  3. Step 3: Cross multiply
    18,721.91x = 28,073.47 × 6,237.54
  4. Step 4: Simplify right side
    18,721.91x = 175,109,392.06
  5. Step 5: Solve for x
    x = 175,109,392.06/18,721.91
  6. Step 6: Final answer
    x = 9,353.18

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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.