Home / 18,870.82-26,036.97-12,578.98

Finding the Fourth Proportional to 18,870.82, 26,036.97 and 12,578.98

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Solution

The fourth proportional to 18,870.82, 26,036.97 and 12,578.98 is: 17,355.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,870.82 : 26,036.97 = 12,578.98 : x
  2. Step 2: Convert to fraction form
    18,870.82/26,036.97 = 12,578.98/x
  3. Step 3: Cross multiply
    18,870.82x = 26,036.97 × 12,578.98
  4. Step 4: Simplify right side
    18,870.82x = 327,518,524.89
  5. Step 5: Solve for x
    x = 327,518,524.89/18,870.82
  6. Step 6: Final answer
    x = 17,355.82

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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.