Home / 20,140.18-27,794.32-11,188.51

Finding the Fourth Proportional to 20,140.18, 27,794.32 and 11,188.51

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Solution

The fourth proportional to 20,140.18, 27,794.32 and 11,188.51 is: 15,440.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,140.18 : 27,794.32 = 11,188.51 : x
  2. Step 2: Convert to fraction form
    20,140.18/27,794.32 = 11,188.51/x
  3. Step 3: Cross multiply
    20,140.18x = 27,794.32 × 11,188.51
  4. Step 4: Simplify right side
    20,140.18x = 310,976,929.81
  5. Step 5: Solve for x
    x = 310,976,929.81/20,140.18
  6. Step 6: Final answer
    x = 15,440.63

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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.