Home / 21,947.19-32,920.71-8,808.78

Finding the Fourth Proportional to 21,947.19, 32,920.71 and 8,808.78

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Solution

The fourth proportional to 21,947.19, 32,920.71 and 8,808.78 is: 13,213.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,947.19 : 32,920.71 = 8,808.78 : x
  2. Step 2: Convert to fraction form
    21,947.19/32,920.71 = 8,808.78/x
  3. Step 3: Cross multiply
    21,947.19x = 32,920.71 × 8,808.78
  4. Step 4: Simplify right side
    21,947.19x = 289,991,291.83
  5. Step 5: Solve for x
    x = 289,991,291.83/21,947.19
  6. Step 6: Final answer
    x = 13,213.14

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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.