Home / 18,379.17-27,418.77-17,870.76

Finding the Fourth Proportional to 18,379.17, 27,418.77 and 17,870.76

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Solution

The fourth proportional to 18,379.17, 27,418.77 and 17,870.76 is: 26,660.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,379.17 : 27,418.77 = 17,870.76 : x
  2. Step 2: Convert to fraction form
    18,379.17/27,418.77 = 17,870.76/x
  3. Step 3: Cross multiply
    18,379.17x = 27,418.77 × 17,870.76
  4. Step 4: Simplify right side
    18,379.17x = 489,994,258.17
  5. Step 5: Solve for x
    x = 489,994,258.17/18,379.17
  6. Step 6: Final answer
    x = 26,660.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.