Home / 27,711.40-38,241.30-15,135.88

Finding the Fourth Proportional to 27,711.40, 38,241.30 and 15,135.88

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Solution

The fourth proportional to 27,711.40, 38,241.30 and 15,135.88 is: 20,887.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,711.40 : 38,241.30 = 15,135.88 : x
  2. Step 2: Convert to fraction form
    27,711.40/38,241.30 = 15,135.88/x
  3. Step 3: Cross multiply
    27,711.40x = 38,241.30 × 15,135.88
  4. Step 4: Simplify right side
    27,711.40x = 578,815,727.84
  5. Step 5: Solve for x
    x = 578,815,727.84/27,711.40
  6. Step 6: Final answer
    x = 20,887.28

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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.