Home / 15,336.37-21,158.18-8,620.46

Finding the Fourth Proportional to 15,336.37, 21,158.18 and 8,620.46

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Solution

The fourth proportional to 15,336.37, 21,158.18 and 8,620.46 is: 11,892.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,336.37 : 21,158.18 = 8,620.46 : x
  2. Step 2: Convert to fraction form
    15,336.37/21,158.18 = 8,620.46/x
  3. Step 3: Cross multiply
    15,336.37x = 21,158.18 × 8,620.46
  4. Step 4: Simplify right side
    15,336.37x = 182,393,138.57
  5. Step 5: Solve for x
    x = 182,393,138.57/15,336.37
  6. Step 6: Final answer
    x = 11,892.85

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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.