Home / 15,508.92-21,402.36-8,435.34

Finding the Fourth Proportional to 15,508.92, 21,402.36 and 8,435.34

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Solution

The fourth proportional to 15,508.92, 21,402.36 and 8,435.34 is: 11,640.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,508.92 : 21,402.36 = 8,435.34 : x
  2. Step 2: Convert to fraction form
    15,508.92/21,402.36 = 8,435.34/x
  3. Step 3: Cross multiply
    15,508.92x = 21,402.36 × 8,435.34
  4. Step 4: Simplify right side
    15,508.92x = 180,536,183.40
  5. Step 5: Solve for x
    x = 180,536,183.40/15,508.92
  6. Step 6: Final answer
    x = 11,640.80

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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.