Home / 19,890.44-27,449.51-10,938.62

Finding the Fourth Proportional to 19,890.44, 27,449.51 and 10,938.62

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Solution

The fourth proportional to 19,890.44, 27,449.51 and 10,938.62 is: 15,095.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,890.44 : 27,449.51 = 10,938.62 : x
  2. Step 2: Convert to fraction form
    19,890.44/27,449.51 = 10,938.62/x
  3. Step 3: Cross multiply
    19,890.44x = 27,449.51 × 10,938.62
  4. Step 4: Simplify right side
    19,890.44x = 300,259,773.01
  5. Step 5: Solve for x
    x = 300,259,773.01/19,890.44
  6. Step 6: Final answer
    x = 15,095.69

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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.