Home / 15,767.36-21,758.55-8,693.66

Finding the Fourth Proportional to 15,767.36, 21,758.55 and 8,693.66

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Solution

The fourth proportional to 15,767.36, 21,758.55 and 8,693.66 is: 11,997.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,767.36 : 21,758.55 = 8,693.66 : x
  2. Step 2: Convert to fraction form
    15,767.36/21,758.55 = 8,693.66/x
  3. Step 3: Cross multiply
    15,767.36x = 21,758.55 × 8,693.66
  4. Step 4: Simplify right side
    15,767.36x = 189,161,435.79
  5. Step 5: Solve for x
    x = 189,161,435.79/15,767.36
  6. Step 6: Final answer
    x = 11,997.03

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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.