Home / 12,539.76-18,807.36-3,772.32

Finding the Fourth Proportional to 12,539.76, 18,807.36 and 3,772.32

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Solution

The fourth proportional to 12,539.76, 18,807.36 and 3,772.32 is: 5,657.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,539.76 : 18,807.36 = 3,772.32 : x
  2. Step 2: Convert to fraction form
    12,539.76/18,807.36 = 3,772.32/x
  3. Step 3: Cross multiply
    12,539.76x = 18,807.36 × 3,772.32
  4. Step 4: Simplify right side
    12,539.76x = 70,947,380.28
  5. Step 5: Solve for x
    x = 70,947,380.28/12,539.76
  6. Step 6: Final answer
    x = 5,657.79

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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.