Home / 10,213.48-15,319.61-3,639.32

Finding the Fourth Proportional to 10,213.48, 15,319.61 and 3,639.32

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Solution

The fourth proportional to 10,213.48, 15,319.61 and 3,639.32 is: 5,458.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,213.48 : 15,319.61 = 3,639.32 : x
  2. Step 2: Convert to fraction form
    10,213.48/15,319.61 = 3,639.32/x
  3. Step 3: Cross multiply
    10,213.48x = 15,319.61 × 3,639.32
  4. Step 4: Simplify right side
    10,213.48x = 55,752,963.07
  5. Step 5: Solve for x
    x = 55,752,963.07/10,213.48
  6. Step 6: Final answer
    x = 5,458.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.