Home / 18,671.11-25,760.64-11,113.65

Finding the Fourth Proportional to 18,671.11, 25,760.64 and 11,113.65

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Solution

The fourth proportional to 18,671.11, 25,760.64 and 11,113.65 is: 15,333.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,671.11 : 25,760.64 = 11,113.65 : x
  2. Step 2: Convert to fraction form
    18,671.11/25,760.64 = 11,113.65/x
  3. Step 3: Cross multiply
    18,671.11x = 25,760.64 × 11,113.65
  4. Step 4: Simplify right side
    18,671.11x = 286,294,736.74
  5. Step 5: Solve for x
    x = 286,294,736.74/18,671.11
  6. Step 6: Final answer
    x = 15,333.57

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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.