Home / 19,679.78-27,157.68-10,727.20

Finding the Fourth Proportional to 19,679.78, 27,157.68 and 10,727.20

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Solution

The fourth proportional to 19,679.78, 27,157.68 and 10,727.20 is: 14,803.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,679.78 : 27,157.68 = 10,727.20 : x
  2. Step 2: Convert to fraction form
    19,679.78/27,157.68 = 10,727.20/x
  3. Step 3: Cross multiply
    19,679.78x = 27,157.68 × 10,727.20
  4. Step 4: Simplify right side
    19,679.78x = 291,325,891.71
  5. Step 5: Solve for x
    x = 291,325,891.71/19,679.78
  6. Step 6: Final answer
    x = 14,803.31

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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.