Home / 28,249.46-42,401.53-20,775.99

Finding the Fourth Proportional to 28,249.46, 42,401.53 and 20,775.99

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Solution

The fourth proportional to 28,249.46, 42,401.53 and 20,775.99 is: 31,184.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,249.46 : 42,401.53 = 20,775.99 : x
  2. Step 2: Convert to fraction form
    28,249.46/42,401.53 = 20,775.99/x
  3. Step 3: Cross multiply
    28,249.46x = 42,401.53 × 20,775.99
  4. Step 4: Simplify right side
    28,249.46x = 880,933,831.38
  5. Step 5: Solve for x
    x = 880,933,831.38/28,249.46
  6. Step 6: Final answer
    x = 31,184.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.