Home / 21,401.40-32,102.10-19,287.30

Finding the Fourth Proportional to 21,401.40, 32,102.10 and 19,287.30

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Solution

The fourth proportional to 21,401.40, 32,102.10 and 19,287.30 is: 28,930.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,401.40 : 32,102.10 = 19,287.30 : x
  2. Step 2: Convert to fraction form
    21,401.40/32,102.10 = 19,287.30/x
  3. Step 3: Cross multiply
    21,401.40x = 32,102.10 × 19,287.30
  4. Step 4: Simplify right side
    21,401.40x = 619,162,833.33
  5. Step 5: Solve for x
    x = 619,162,833.33/21,401.40
  6. Step 6: Final answer
    x = 28,930.95

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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.