Home / 15,137.76-20,887.71-8,423.37

Finding the Fourth Proportional to 15,137.76, 20,887.71 and 8,423.37

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Solution

The fourth proportional to 15,137.76, 20,887.71 and 8,423.37 is: 11,622.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,137.76 : 20,887.71 = 8,423.37 : x
  2. Step 2: Convert to fraction form
    15,137.76/20,887.71 = 8,423.37/x
  3. Step 3: Cross multiply
    15,137.76x = 20,887.71 × 8,423.37
  4. Step 4: Simplify right side
    15,137.76x = 175,944,878.20
  5. Step 5: Solve for x
    x = 175,944,878.20/15,137.76
  6. Step 6: Final answer
    x = 11,622.91

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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.