Home / 15,275.75-21,081.37-8,563.53

Finding the Fourth Proportional to 15,275.75, 21,081.37 and 8,563.53

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Solution

The fourth proportional to 15,275.75, 21,081.37 and 8,563.53 is: 11,818.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,275.75 : 21,081.37 = 8,563.53 : x
  2. Step 2: Convert to fraction form
    15,275.75/21,081.37 = 8,563.53/x
  3. Step 3: Cross multiply
    15,275.75x = 21,081.37 × 8,563.53
  4. Step 4: Simplify right side
    15,275.75x = 180,530,923.03
  5. Step 5: Solve for x
    x = 180,530,923.03/15,275.75
  6. Step 6: Final answer
    x = 11,818.14

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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.