Home / 27,816.32-38,389.74-15,881.38

Finding the Fourth Proportional to 27,816.32, 38,389.74 and 15,881.38

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Solution

The fourth proportional to 27,816.32, 38,389.74 and 15,881.38 is: 21,918.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,816.32 : 38,389.74 = 15,881.38 : x
  2. Step 2: Convert to fraction form
    27,816.32/38,389.74 = 15,881.38/x
  3. Step 3: Cross multiply
    27,816.32x = 38,389.74 × 15,881.38
  4. Step 4: Simplify right side
    27,816.32x = 609,682,049.04
  5. Step 5: Solve for x
    x = 609,682,049.04/27,816.32
  6. Step 6: Final answer
    x = 21,918.14

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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.