Home / 27,831.28-38,406-15,255.22

Finding the Fourth Proportional to 27,831.28, 38,406 and 15,255.22

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Solution

The fourth proportional to 27,831.28, 38,406 and 15,255.22 is: 21,051.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,831.28 : 38,406 = 15,255.22 : x
  2. Step 2: Convert to fraction form
    27,831.28/38,406 = 15,255.22/x
  3. Step 3: Cross multiply
    27,831.28x = 38,406 × 15,255.22
  4. Step 4: Simplify right side
    27,831.28x = 585,891,979.32
  5. Step 5: Solve for x
    x = 585,891,979.32/27,831.28
  6. Step 6: Final answer
    x = 21,051.56

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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.