Home / 19,306.56-28,964.09-10,990.50

Finding the Fourth Proportional to 19,306.56, 28,964.09 and 10,990.50

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Solution

The fourth proportional to 19,306.56, 28,964.09 and 10,990.50 is: 16,488.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,306.56 : 28,964.09 = 10,990.50 : x
  2. Step 2: Convert to fraction form
    19,306.56/28,964.09 = 10,990.50/x
  3. Step 3: Cross multiply
    19,306.56x = 28,964.09 × 10,990.50
  4. Step 4: Simplify right side
    19,306.56x = 318,329,831.15
  5. Step 5: Solve for x
    x = 318,329,831.15/19,306.56
  6. Step 6: Final answer
    x = 16,488.17

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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.