Home / 19,920.13-27,489.38-10,967.40

Finding the Fourth Proportional to 19,920.13, 27,489.38 and 10,967.40

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Solution

The fourth proportional to 19,920.13, 27,489.38 and 10,967.40 is: 15,134.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,920.13 : 27,489.38 = 10,967.40 : x
  2. Step 2: Convert to fraction form
    19,920.13/27,489.38 = 10,967.40/x
  3. Step 3: Cross multiply
    19,920.13x = 27,489.38 × 10,967.40
  4. Step 4: Simplify right side
    19,920.13x = 301,486,971.38
  5. Step 5: Solve for x
    x = 301,486,971.38/19,920.13
  6. Step 6: Final answer
    x = 15,134.79

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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.