Home / 15,411.15-21,267.27-8,337.57

Finding the Fourth Proportional to 15,411.15, 21,267.27 and 8,337.57

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Solution

The fourth proportional to 15,411.15, 21,267.27 and 8,337.57 is: 11,505.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,411.15 : 21,267.27 = 8,337.57 : x
  2. Step 2: Convert to fraction form
    15,411.15/21,267.27 = 8,337.57/x
  3. Step 3: Cross multiply
    15,411.15x = 21,267.27 × 8,337.57
  4. Step 4: Simplify right side
    15,411.15x = 177,317,352.33
  5. Step 5: Solve for x
    x = 177,317,352.33/15,411.15
  6. Step 6: Final answer
    x = 11,505.78

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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.