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Finding the Fourth Proportional to 22,868.48, 31,554.48 and 13,438.96

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Solution

The fourth proportional to 22,868.48, 31,554.48 and 13,438.96 is: 18,543.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,868.48 : 31,554.48 = 13,438.96 : x
  2. Step 2: Convert to fraction form
    22,868.48/31,554.48 = 13,438.96/x
  3. Step 3: Cross multiply
    22,868.48x = 31,554.48 × 13,438.96
  4. Step 4: Simplify right side
    22,868.48x = 424,059,394.54
  5. Step 5: Solve for x
    x = 424,059,394.54/22,868.48
  6. Step 6: Final answer
    x = 18,543.40

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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.