Home / 19,880.95-27,436.34-11,383.11

Finding the Fourth Proportional to 19,880.95, 27,436.34 and 11,383.11

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Solution

The fourth proportional to 19,880.95, 27,436.34 and 11,383.11 is: 15,709.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,880.95 : 27,436.34 = 11,383.11 : x
  2. Step 2: Convert to fraction form
    19,880.95/27,436.34 = 11,383.11/x
  3. Step 3: Cross multiply
    19,880.95x = 27,436.34 × 11,383.11
  4. Step 4: Simplify right side
    19,880.95x = 312,310,876.22
  5. Step 5: Solve for x
    x = 312,310,876.22/19,880.95
  6. Step 6: Final answer
    x = 15,709.05

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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.