Home / 21,519.84-32,292.72-8,378.40

Finding the Fourth Proportional to 21,519.84, 32,292.72 and 8,378.40

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Solution

The fourth proportional to 21,519.84, 32,292.72 and 8,378.40 is: 12,572.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,519.84 : 32,292.72 = 8,378.40 : x
  2. Step 2: Convert to fraction form
    21,519.84/32,292.72 = 8,378.40/x
  3. Step 3: Cross multiply
    21,519.84x = 32,292.72 × 8,378.40
  4. Step 4: Simplify right side
    21,519.84x = 270,561,325.25
  5. Step 5: Solve for x
    x = 270,561,325.25/21,519.84
  6. Step 6: Final answer
    x = 12,572.65

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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.