Home / 19,890.31-27,448.82-10,937.87

Finding the Fourth Proportional to 19,890.31, 27,448.82 and 10,937.87

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Solution

The fourth proportional to 19,890.31, 27,448.82 and 10,937.87 is: 15,094.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,890.31 : 27,448.82 = 10,937.87 : x
  2. Step 2: Convert to fraction form
    19,890.31/27,448.82 = 10,937.87/x
  3. Step 3: Cross multiply
    19,890.31x = 27,448.82 × 10,937.87
  4. Step 4: Simplify right side
    19,890.31x = 300,231,720.78
  5. Step 5: Solve for x
    x = 300,231,720.78/19,890.31
  6. Step 6: Final answer
    x = 15,094.37

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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.