Home / 21,440.20-32,117.10-12,195.40

Finding the Fourth Proportional to 21,440.20, 32,117.10 and 12,195.40

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Solution

The fourth proportional to 21,440.20, 32,117.10 and 12,195.40 is: 18,268.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,440.20 : 32,117.10 = 12,195.40 : x
  2. Step 2: Convert to fraction form
    21,440.20/32,117.10 = 12,195.40/x
  3. Step 3: Cross multiply
    21,440.20x = 32,117.10 × 12,195.40
  4. Step 4: Simplify right side
    21,440.20x = 391,680,881.34
  5. Step 5: Solve for x
    x = 391,680,881.34/21,440.20
  6. Step 6: Final answer
    x = 18,268.53

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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.