Home / 21,385.43-32,083.61-8,901.30

Finding the Fourth Proportional to 21,385.43, 32,083.61 and 8,901.30

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Solution

The fourth proportional to 21,385.43, 32,083.61 and 8,901.30 is: 13,354.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,385.43 : 32,083.61 = 8,901.30 : x
  2. Step 2: Convert to fraction form
    21,385.43/32,083.61 = 8,901.30/x
  3. Step 3: Cross multiply
    21,385.43x = 32,083.61 × 8,901.30
  4. Step 4: Simplify right side
    21,385.43x = 285,585,859.95
  5. Step 5: Solve for x
    x = 285,585,859.95/21,385.43
  6. Step 6: Final answer
    x = 13,354.23

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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.