Home / 15,821.56-21,834.57-9,108.16

Finding the Fourth Proportional to 15,821.56, 21,834.57 and 9,108.16

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Solution

The fourth proportional to 15,821.56, 21,834.57 and 9,108.16 is: 12,569.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,821.56 : 21,834.57 = 9,108.16 : x
  2. Step 2: Convert to fraction form
    15,821.56/21,834.57 = 9,108.16/x
  3. Step 3: Cross multiply
    15,821.56x = 21,834.57 × 9,108.16
  4. Step 4: Simplify right side
    15,821.56x = 198,872,736.66
  5. Step 5: Solve for x
    x = 198,872,736.66/15,821.56
  6. Step 6: Final answer
    x = 12,569.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.