Home / 22,211.49-30,632-18,428.66

Finding the Fourth Proportional to 22,211.49, 30,632 and 18,428.66

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Solution

The fourth proportional to 22,211.49, 30,632 and 18,428.66 is: 25,415.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,211.49 : 30,632 = 18,428.66 : x
  2. Step 2: Convert to fraction form
    22,211.49/30,632 = 18,428.66/x
  3. Step 3: Cross multiply
    22,211.49x = 30,632 × 18,428.66
  4. Step 4: Simplify right side
    22,211.49x = 564,506,559.96
  5. Step 5: Solve for x
    x = 564,506,559.96/22,211.49
  6. Step 6: Final answer
    x = 25,415.07

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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.