Home / 20,088.12-27,719.74-11,135.18

Finding the Fourth Proportional to 20,088.12, 27,719.74 and 11,135.18

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Solution

The fourth proportional to 20,088.12, 27,719.74 and 11,135.18 is: 15,365.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,088.12 : 27,719.74 = 11,135.18 : x
  2. Step 2: Convert to fraction form
    20,088.12/27,719.74 = 11,135.18/x
  3. Step 3: Cross multiply
    20,088.12x = 27,719.74 × 11,135.18
  4. Step 4: Simplify right side
    20,088.12x = 308,664,294.45
  5. Step 5: Solve for x
    x = 308,664,294.45/20,088.12
  6. Step 6: Final answer
    x = 15,365.51

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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.