Home / 27,767.64-38,318.88-15,831.64

Finding the Fourth Proportional to 27,767.64, 38,318.88 and 15,831.64

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Solution

The fourth proportional to 27,767.64, 38,318.88 and 15,831.64 is: 21,847.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,767.64 : 38,318.88 = 15,831.64 : x
  2. Step 2: Convert to fraction form
    27,767.64/38,318.88 = 15,831.64/x
  3. Step 3: Cross multiply
    27,767.64x = 38,318.88 × 15,831.64
  4. Step 4: Simplify right side
    27,767.64x = 606,650,713.36
  5. Step 5: Solve for x
    x = 606,650,713.36/27,767.64
  6. Step 6: Final answer
    x = 21,847.40

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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.