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Finding the Fourth Proportional to 21,658.15, 32,488.37 and 6,865.93

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Solution

The fourth proportional to 21,658.15, 32,488.37 and 6,865.93 is: 10,299.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,658.15 : 32,488.37 = 6,865.93 : x
  2. Step 2: Convert to fraction form
    21,658.15/32,488.37 = 6,865.93/x
  3. Step 3: Cross multiply
    21,658.15x = 32,488.37 × 6,865.93
  4. Step 4: Simplify right side
    21,658.15x = 223,062,874.23
  5. Step 5: Solve for x
    x = 223,062,874.23/21,658.15
  6. Step 6: Final answer
    x = 10,299.26

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1.5x scale

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.