Home / 27,981.12-38,614.44-15,405.84

Finding the Fourth Proportional to 27,981.12, 38,614.44 and 15,405.84

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Solution

The fourth proportional to 27,981.12, 38,614.44 and 15,405.84 is: 21,260.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,981.12 : 38,614.44 = 15,405.84 : x
  2. Step 2: Convert to fraction form
    27,981.12/38,614.44 = 15,405.84/x
  3. Step 3: Cross multiply
    27,981.12x = 38,614.44 × 15,405.84
  4. Step 4: Simplify right side
    27,981.12x = 594,887,884.33
  5. Step 5: Solve for x
    x = 594,887,884.33/27,981.12
  6. Step 6: Final answer
    x = 21,260.33

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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.