Home / 21,928.60-32,903.70-8,781.40

Finding the Fourth Proportional to 21,928.60, 32,903.70 and 8,781.40

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Solution

The fourth proportional to 21,928.60, 32,903.70 and 8,781.40 is: 13,176.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,928.60 : 32,903.70 = 8,781.40 : x
  2. Step 2: Convert to fraction form
    21,928.60/32,903.70 = 8,781.40/x
  3. Step 3: Cross multiply
    21,928.60x = 32,903.70 × 8,781.40
  4. Step 4: Simplify right side
    21,928.60x = 288,940,551.18
  5. Step 5: Solve for x
    x = 288,940,551.18/21,928.60
  6. Step 6: Final answer
    x = 13,176.42

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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.