Home / 19,890.03-27,449.43-10,938.21

Finding the Fourth Proportional to 19,890.03, 27,449.43 and 10,938.21

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Solution

The fourth proportional to 19,890.03, 27,449.43 and 10,938.21 is: 15,095.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,890.03 : 27,449.43 = 10,938.21 : x
  2. Step 2: Convert to fraction form
    19,890.03/27,449.43 = 10,938.21/x
  3. Step 3: Cross multiply
    19,890.03x = 27,449.43 × 10,938.21
  4. Step 4: Simplify right side
    19,890.03x = 300,247,701.70
  5. Step 5: Solve for x
    x = 300,247,701.70/19,890.03
  6. Step 6: Final answer
    x = 15,095.39

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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.