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Finding the Fourth Proportional to 21,658.55, 32,488.71 and 6,867.14

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Solution

The fourth proportional to 21,658.55, 32,488.71 and 6,867.14 is: 10,300.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,658.55 : 32,488.71 = 6,867.14 : x
  2. Step 2: Convert to fraction form
    21,658.55/32,488.71 = 6,867.14/x
  3. Step 3: Cross multiply
    21,658.55x = 32,488.71 × 6,867.14
  4. Step 4: Simplify right side
    21,658.55x = 223,104,601.21
  5. Step 5: Solve for x
    x = 223,104,601.21/21,658.55
  6. Step 6: Final answer
    x = 10,300.99

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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.