Home / 20,099.08-30,124.44-7,438.72

Finding the Fourth Proportional to 20,099.08, 30,124.44 and 7,438.72

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Solution

The fourth proportional to 20,099.08, 30,124.44 and 7,438.72 is: 11,149.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,099.08 : 30,124.44 = 7,438.72 : x
  2. Step 2: Convert to fraction form
    20,099.08/30,124.44 = 7,438.72/x
  3. Step 3: Cross multiply
    20,099.08x = 30,124.44 × 7,438.72
  4. Step 4: Simplify right side
    20,099.08x = 224,087,274.32
  5. Step 5: Solve for x
    x = 224,087,274.32/20,099.08
  6. Step 6: Final answer
    x = 11,149.13

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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.