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Finding the Fourth Proportional to 21,785.95, 32,675.84 and 6,992.92

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Solution

The fourth proportional to 21,785.95, 32,675.84 and 6,992.92 is: 10,488.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,785.95 : 32,675.84 = 6,992.92 : x
  2. Step 2: Convert to fraction form
    21,785.95/32,675.84 = 6,992.92/x
  3. Step 3: Cross multiply
    21,785.95x = 32,675.84 × 6,992.92
  4. Step 4: Simplify right side
    21,785.95x = 228,499,567.16
  5. Step 5: Solve for x
    x = 228,499,567.16/21,785.95
  6. Step 6: Final answer
    x = 10,488.39

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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.