Home / 18,721.92-25,838.76-18,106.53

Finding the Fourth Proportional to 18,721.92, 25,838.76 and 18,106.53

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Solution

The fourth proportional to 18,721.92, 25,838.76 and 18,106.53 is: 24,989.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,721.92 : 25,838.76 = 18,106.53 : x
  2. Step 2: Convert to fraction form
    18,721.92/25,838.76 = 18,106.53/x
  3. Step 3: Cross multiply
    18,721.92x = 25,838.76 × 18,106.53
  4. Step 4: Simplify right side
    18,721.92x = 467,850,283.10
  5. Step 5: Solve for x
    x = 467,850,283.10/18,721.92
  6. Step 6: Final answer
    x = 24,989.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.