Home / 28,945.28-39,943.84-16,369.76

Finding the Fourth Proportional to 28,945.28, 39,943.84 and 16,369.76

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Solution

The fourth proportional to 28,945.28, 39,943.84 and 16,369.76 is: 22,589.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,945.28 : 39,943.84 = 16,369.76 : x
  2. Step 2: Convert to fraction form
    28,945.28/39,943.84 = 16,369.76/x
  3. Step 3: Cross multiply
    28,945.28x = 39,943.84 × 16,369.76
  4. Step 4: Simplify right side
    28,945.28x = 653,871,074.28
  5. Step 5: Solve for x
    x = 653,871,074.28/28,945.28
  6. Step 6: Final answer
    x = 22,589.90

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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.