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Finding the Fourth Proportional to 18,921.25, 26,111.02 and 10,963.29

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Solution

The fourth proportional to 18,921.25, 26,111.02 and 10,963.29 is: 15,129.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,921.25 : 26,111.02 = 10,963.29 : x
  2. Step 2: Convert to fraction form
    18,921.25/26,111.02 = 10,963.29/x
  3. Step 3: Cross multiply
    18,921.25x = 26,111.02 × 10,963.29
  4. Step 4: Simplify right side
    18,921.25x = 286,262,684.46
  5. Step 5: Solve for x
    x = 286,262,684.46/18,921.25
  6. Step 6: Final answer
    x = 15,129.16

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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.