Home / 19,887.78-27,444.42-10,935.20

Finding the Fourth Proportional to 19,887.78, 27,444.42 and 10,935.20

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Solution

The fourth proportional to 19,887.78, 27,444.42 and 10,935.20 is: 15,090.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,887.78 : 27,444.42 = 10,935.20 : x
  2. Step 2: Convert to fraction form
    19,887.78/27,444.42 = 10,935.20/x
  3. Step 3: Cross multiply
    19,887.78x = 27,444.42 × 10,935.20
  4. Step 4: Simplify right side
    19,887.78x = 300,110,269.56
  5. Step 5: Solve for x
    x = 300,110,269.56/19,887.78
  6. Step 6: Final answer
    x = 15,090.19

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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.