Home / 21,788.67-32,669.84-9,778.63

Finding the Fourth Proportional to 21,788.67, 32,669.84 and 9,778.63

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Solution

The fourth proportional to 21,788.67, 32,669.84 and 9,778.63 is: 14,662.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,788.67 : 32,669.84 = 9,778.63 : x
  2. Step 2: Convert to fraction form
    21,788.67/32,669.84 = 9,778.63/x
  3. Step 3: Cross multiply
    21,788.67x = 32,669.84 × 9,778.63
  4. Step 4: Simplify right side
    21,788.67x = 319,466,277.52
  5. Step 5: Solve for x
    x = 319,466,277.52/21,788.67
  6. Step 6: Final answer
    x = 14,662.04

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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.