Home / 27,820.32-38,395.26-15,885.36

Finding the Fourth Proportional to 27,820.32, 38,395.26 and 15,885.36

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Solution

The fourth proportional to 27,820.32, 38,395.26 and 15,885.36 is: 21,923.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,820.32 : 38,395.26 = 15,885.36 : x
  2. Step 2: Convert to fraction form
    27,820.32/38,395.26 = 15,885.36/x
  3. Step 3: Cross multiply
    27,820.32x = 38,395.26 × 15,885.36
  4. Step 4: Simplify right side
    27,820.32x = 609,922,527.39
  5. Step 5: Solve for x
    x = 609,922,527.39/27,820.32
  6. Step 6: Final answer
    x = 21,923.63

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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.