Home / 18,974.24-28,458.80-5,124.32

Finding the Fourth Proportional to 18,974.24, 28,458.80 and 5,124.32

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Solution

The fourth proportional to 18,974.24, 28,458.80 and 5,124.32 is: 7,685.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,974.24 : 28,458.80 = 5,124.32 : x
  2. Step 2: Convert to fraction form
    18,974.24/28,458.80 = 5,124.32/x
  3. Step 3: Cross multiply
    18,974.24x = 28,458.80 × 5,124.32
  4. Step 4: Simplify right side
    18,974.24x = 145,831,998.02
  5. Step 5: Solve for x
    x = 145,831,998.02/18,974.24
  6. Step 6: Final answer
    x = 7,685.79

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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.