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Finding the Fourth Proportional to 22,898.96, 31,560.68 and 20,914.96

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Solution

The fourth proportional to 22,898.96, 31,560.68 and 20,914.96 is: 28,826.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,898.96 : 31,560.68 = 20,914.96 : x
  2. Step 2: Convert to fraction form
    22,898.96/31,560.68 = 20,914.96/x
  3. Step 3: Cross multiply
    22,898.96x = 31,560.68 × 20,914.96
  4. Step 4: Simplify right side
    22,898.96x = 660,090,359.77
  5. Step 5: Solve for x
    x = 660,090,359.77/22,898.96
  6. Step 6: Final answer
    x = 28,826.22

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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.