Home / 20,904.45-28,846.85-11,472.95

Finding the Fourth Proportional to 20,904.45, 28,846.85 and 11,472.95

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Solution

The fourth proportional to 20,904.45, 28,846.85 and 11,472.95 is: 15,831.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,904.45 : 28,846.85 = 11,472.95 : x
  2. Step 2: Convert to fraction form
    20,904.45/28,846.85 = 11,472.95/x
  3. Step 3: Cross multiply
    20,904.45x = 28,846.85 × 11,472.95
  4. Step 4: Simplify right side
    20,904.45x = 330,958,266.11
  5. Step 5: Solve for x
    x = 330,958,266.11/20,904.45
  6. Step 6: Final answer
    x = 15,831.95

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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.