Home / 20,738.06-28,618.53-11,785.58

Finding the Fourth Proportional to 20,738.06, 28,618.53 and 11,785.58

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Solution

The fourth proportional to 20,738.06, 28,618.53 and 11,785.58 is: 16,264.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,738.06 : 28,618.53 = 11,785.58 : x
  2. Step 2: Convert to fraction form
    20,738.06/28,618.53 = 11,785.58/x
  3. Step 3: Cross multiply
    20,738.06x = 28,618.53 × 11,785.58
  4. Step 4: Simplify right side
    20,738.06x = 337,285,831.70
  5. Step 5: Solve for x
    x = 337,285,831.70/20,738.06
  6. Step 6: Final answer
    x = 16,264.10

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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.