Home / 28,691.11-39,593.64-15,945.45

Finding the Fourth Proportional to 28,691.11, 39,593.64 and 15,945.45

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Solution

The fourth proportional to 28,691.11, 39,593.64 and 15,945.45 is: 22,004.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,691.11 : 39,593.64 = 15,945.45 : x
  2. Step 2: Convert to fraction form
    28,691.11/39,593.64 = 15,945.45/x
  3. Step 3: Cross multiply
    28,691.11x = 39,593.64 × 15,945.45
  4. Step 4: Simplify right side
    28,691.11x = 631,338,406.94
  5. Step 5: Solve for x
    x = 631,338,406.94/28,691.11
  6. Step 6: Final answer
    x = 22,004.67

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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.