Home / 21,788.71-32,679.12-5,778.35

Finding the Fourth Proportional to 21,788.71, 32,679.12 and 5,778.35

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Solution

The fourth proportional to 21,788.71, 32,679.12 and 5,778.35 is: 8,666.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,788.71 : 32,679.12 = 5,778.35 : x
  2. Step 2: Convert to fraction form
    21,788.71/32,679.12 = 5,778.35/x
  3. Step 3: Cross multiply
    21,788.71x = 32,679.12 × 5,778.35
  4. Step 4: Simplify right side
    21,788.71x = 188,831,229.66
  5. Step 5: Solve for x
    x = 188,831,229.66/21,788.71
  6. Step 6: Final answer
    x = 8,666.47

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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.