Home / 27,919.90-38,529.43-15,983.20

Finding the Fourth Proportional to 27,919.90, 38,529.43 and 15,983.20

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Solution

The fourth proportional to 27,919.90, 38,529.43 and 15,983.20 is: 22,056.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,919.90 : 38,529.43 = 15,983.20 : x
  2. Step 2: Convert to fraction form
    27,919.90/38,529.43 = 15,983.20/x
  3. Step 3: Cross multiply
    27,919.90x = 38,529.43 × 15,983.20
  4. Step 4: Simplify right side
    27,919.90x = 615,823,585.58
  5. Step 5: Solve for x
    x = 615,823,585.58/27,919.90
  6. Step 6: Final answer
    x = 22,056.80

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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.