Home / 13,639.88-18,823.23-8,333.57

Finding the Fourth Proportional to 13,639.88, 18,823.23 and 8,333.57

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Solution

The fourth proportional to 13,639.88, 18,823.23 and 8,333.57 is: 11,500.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,639.88 : 18,823.23 = 8,333.57 : x
  2. Step 2: Convert to fraction form
    13,639.88/18,823.23 = 8,333.57/x
  3. Step 3: Cross multiply
    13,639.88x = 18,823.23 × 8,333.57
  4. Step 4: Simplify right side
    13,639.88x = 156,864,610.71
  5. Step 5: Solve for x
    x = 156,864,610.71/13,639.88
  6. Step 6: Final answer
    x = 11,500.44

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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.