Home / 15,249.10-21,043.81-8,535.16

Finding the Fourth Proportional to 15,249.10, 21,043.81 and 8,535.16

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Solution

The fourth proportional to 15,249.10, 21,043.81 and 8,535.16 is: 11,778.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,249.10 : 21,043.81 = 8,535.16 : x
  2. Step 2: Convert to fraction form
    15,249.10/21,043.81 = 8,535.16/x
  3. Step 3: Cross multiply
    15,249.10x = 21,043.81 × 8,535.16
  4. Step 4: Simplify right side
    15,249.10x = 179,612,285.36
  5. Step 5: Solve for x
    x = 179,612,285.36/15,249.10
  6. Step 6: Final answer
    x = 11,778.55

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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.