Home / 18,966.58-26,172.78-11,411.20

Finding the Fourth Proportional to 18,966.58, 26,172.78 and 11,411.20

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Solution

The fourth proportional to 18,966.58, 26,172.78 and 11,411.20 is: 15,746.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,966.58 : 26,172.78 = 11,411.20 : x
  2. Step 2: Convert to fraction form
    18,966.58/26,172.78 = 11,411.20/x
  3. Step 3: Cross multiply
    18,966.58x = 26,172.78 × 11,411.20
  4. Step 4: Simplify right side
    18,966.58x = 298,662,827.14
  5. Step 5: Solve for x
    x = 298,662,827.14/18,966.58
  6. Step 6: Final answer
    x = 15,746.79

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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.