Home / 15,821.38-21,834.88-8,749.16

Finding the Fourth Proportional to 15,821.38, 21,834.88 and 8,749.16

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Solution

The fourth proportional to 15,821.38, 21,834.88 and 8,749.16 is: 12,074.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,821.38 : 21,834.88 = 8,749.16 : x
  2. Step 2: Convert to fraction form
    15,821.38/21,834.88 = 8,749.16/x
  3. Step 3: Cross multiply
    15,821.38x = 21,834.88 × 8,749.16
  4. Step 4: Simplify right side
    15,821.38x = 191,036,858.70
  5. Step 5: Solve for x
    x = 191,036,858.70/15,821.38
  6. Step 6: Final answer
    x = 12,074.60

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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.