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Finding the Fourth Proportional to 22,881, 31,559.50 and 20,998.66

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Solution

The fourth proportional to 22,881, 31,559.50 and 20,998.66 is: 28,963.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,881 : 31,559.50 = 20,998.66 : x
  2. Step 2: Convert to fraction form
    22,881/31,559.50 = 20,998.66/x
  3. Step 3: Cross multiply
    22,881x = 31,559.50 × 20,998.66
  4. Step 4: Simplify right side
    22,881x = 662,707,210.27
  5. Step 5: Solve for x
    x = 662,707,210.27/22,881
  6. Step 6: Final answer
    x = 28,963.21

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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.