Home / 19,688.78-27,169.91-10,736.45

Finding the Fourth Proportional to 19,688.78, 27,169.91 and 10,736.45

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Solution

The fourth proportional to 19,688.78, 27,169.91 and 10,736.45 is: 14,815.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,688.78 : 27,169.91 = 10,736.45 : x
  2. Step 2: Convert to fraction form
    19,688.78/27,169.91 = 10,736.45/x
  3. Step 3: Cross multiply
    19,688.78x = 27,169.91 × 10,736.45
  4. Step 4: Simplify right side
    19,688.78x = 291,708,380.22
  5. Step 5: Solve for x
    x = 291,708,380.22/19,688.78
  6. Step 6: Final answer
    x = 14,815.97

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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.