Home / 12,632.39-18,990.11-11,718.98

Finding the Fourth Proportional to 12,632.39, 18,990.11 and 11,718.98

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Solution

The fourth proportional to 12,632.39, 18,990.11 and 11,718.98 is: 17,616.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,632.39 : 18,990.11 = 11,718.98 : x
  2. Step 2: Convert to fraction form
    12,632.39/18,990.11 = 11,718.98/x
  3. Step 3: Cross multiply
    12,632.39x = 18,990.11 × 11,718.98
  4. Step 4: Simplify right side
    12,632.39x = 222,544,565.74
  5. Step 5: Solve for x
    x = 222,544,565.74/12,632.39
  6. Step 6: Final answer
    x = 17,616.99

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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.