Home / 15,821.57-21,832.86-8,747.54

Finding the Fourth Proportional to 15,821.57, 21,832.86 and 8,747.54

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Solution

The fourth proportional to 15,821.57, 21,832.86 and 8,747.54 is: 12,071.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,821.57 : 21,832.86 = 8,747.54 : x
  2. Step 2: Convert to fraction form
    15,821.57/21,832.86 = 8,747.54/x
  3. Step 3: Cross multiply
    15,821.57x = 21,832.86 × 8,747.54
  4. Step 4: Simplify right side
    15,821.57x = 190,983,707.00
  5. Step 5: Solve for x
    x = 190,983,707.00/15,821.57
  6. Step 6: Final answer
    x = 12,071.10

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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.