Home / 18,228.50-25,148.13-11,511.62

Finding the Fourth Proportional to 18,228.50, 25,148.13 and 11,511.62

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Solution

The fourth proportional to 18,228.50, 25,148.13 and 11,511.62 is: 15,881.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,228.50 : 25,148.13 = 11,511.62 : x
  2. Step 2: Convert to fraction form
    18,228.50/25,148.13 = 11,511.62/x
  3. Step 3: Cross multiply
    18,228.50x = 25,148.13 × 11,511.62
  4. Step 4: Simplify right side
    18,228.50x = 289,495,716.27
  5. Step 5: Solve for x
    x = 289,495,716.27/18,228.50
  6. Step 6: Final answer
    x = 15,881.49

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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.