Home / 21,788.95-32,679.50-5,778.60

Finding the Fourth Proportional to 21,788.95, 32,679.50 and 5,778.60

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Solution

The fourth proportional to 21,788.95, 32,679.50 and 5,778.60 is: 8,666.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,788.95 : 32,679.50 = 5,778.60 : x
  2. Step 2: Convert to fraction form
    21,788.95/32,679.50 = 5,778.60/x
  3. Step 3: Cross multiply
    21,788.95x = 32,679.50 × 5,778.60
  4. Step 4: Simplify right side
    21,788.95x = 188,841,758.70
  5. Step 5: Solve for x
    x = 188,841,758.70/21,788.95
  6. Step 6: Final answer
    x = 8,666.86

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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.