Home / 27,711.15-38,241.14-15,135.63

Finding the Fourth Proportional to 27,711.15, 38,241.14 and 15,135.63

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Solution

The fourth proportional to 27,711.15, 38,241.14 and 15,135.63 is: 20,887.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,711.15 : 38,241.14 = 15,135.63 : x
  2. Step 2: Convert to fraction form
    27,711.15/38,241.14 = 15,135.63/x
  3. Step 3: Cross multiply
    27,711.15x = 38,241.14 × 15,135.63
  4. Step 4: Simplify right side
    27,711.15x = 578,803,745.82
  5. Step 5: Solve for x
    x = 578,803,745.82/27,711.15
  6. Step 6: Final answer
    x = 20,887.03

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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.