Home / 27,918.28-38,529.78-15,985.48

Finding the Fourth Proportional to 27,918.28, 38,529.78 and 15,985.48

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Solution

The fourth proportional to 27,918.28, 38,529.78 and 15,985.48 is: 22,061.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,918.28 : 38,529.78 = 15,985.48 : x
  2. Step 2: Convert to fraction form
    27,918.28/38,529.78 = 15,985.48/x
  3. Step 3: Cross multiply
    27,918.28x = 38,529.78 × 15,985.48
  4. Step 4: Simplify right side
    27,918.28x = 615,917,027.59
  5. Step 5: Solve for x
    x = 615,917,027.59/27,918.28
  6. Step 6: Final answer
    x = 22,061.42

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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.