Home / 15,329.45-21,155.13-8,616.37

Finding the Fourth Proportional to 15,329.45, 21,155.13 and 8,616.37

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Solution

The fourth proportional to 15,329.45, 21,155.13 and 8,616.37 is: 11,890.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,329.45 : 21,155.13 = 8,616.37 : x
  2. Step 2: Convert to fraction form
    15,329.45/21,155.13 = 8,616.37/x
  3. Step 3: Cross multiply
    15,329.45x = 21,155.13 × 8,616.37
  4. Step 4: Simplify right side
    15,329.45x = 182,280,343.24
  5. Step 5: Solve for x
    x = 182,280,343.24/15,329.45
  6. Step 6: Final answer
    x = 11,890.86

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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.