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Finding the Fourth Proportional to 15,155.50, 20,914.29 and 10,375.32

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Solution

The fourth proportional to 15,155.50, 20,914.29 and 10,375.32 is: 14,317.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,155.50 : 20,914.29 = 10,375.32 : x
  2. Step 2: Convert to fraction form
    15,155.50/20,914.29 = 10,375.32/x
  3. Step 3: Cross multiply
    15,155.50x = 20,914.29 × 10,375.32
  4. Step 4: Simplify right side
    15,155.50x = 216,992,451.32
  5. Step 5: Solve for x
    x = 216,992,451.32/15,155.50
  6. Step 6: Final answer
    x = 14,317.74

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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.