Home / 10,533.72-15,802.86-3,138.78

Finding the Fourth Proportional to 10,533.72, 15,802.86 and 3,138.78

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Solution

The fourth proportional to 10,533.72, 15,802.86 and 3,138.78 is: 4,708.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,533.72 : 15,802.86 = 3,138.78 : x
  2. Step 2: Convert to fraction form
    10,533.72/15,802.86 = 3,138.78/x
  3. Step 3: Cross multiply
    10,533.72x = 15,802.86 × 3,138.78
  4. Step 4: Simplify right side
    10,533.72x = 49,601,625.36
  5. Step 5: Solve for x
    x = 49,601,625.36/10,533.72
  6. Step 6: Final answer
    x = 4,708.84

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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.