Home / 15,767.60-21,759.12-8,694.32

Finding the Fourth Proportional to 15,767.60, 21,759.12 and 8,694.32

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Solution

The fourth proportional to 15,767.60, 21,759.12 and 8,694.32 is: 11,998.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,767.60 : 21,759.12 = 8,694.32 : x
  2. Step 2: Convert to fraction form
    15,767.60/21,759.12 = 8,694.32/x
  3. Step 3: Cross multiply
    15,767.60x = 21,759.12 × 8,694.32
  4. Step 4: Simplify right side
    15,767.60x = 189,180,752.20
  5. Step 5: Solve for x
    x = 189,180,752.20/15,767.60
  6. Step 6: Final answer
    x = 11,998.07

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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.