Home / 20,248.32-30,385.28-7,936

Finding the Fourth Proportional to 20,248.32, 30,385.28 and 7,936

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Solution

The fourth proportional to 20,248.32, 30,385.28 and 7,936 is: 11,909.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,248.32 : 30,385.28 = 7,936 : x
  2. Step 2: Convert to fraction form
    20,248.32/30,385.28 = 7,936/x
  3. Step 3: Cross multiply
    20,248.32x = 30,385.28 × 7,936
  4. Step 4: Simplify right side
    20,248.32x = 241,137,582.08
  5. Step 5: Solve for x
    x = 241,137,582.08/20,248.32
  6. Step 6: Final answer
    x = 11,909.02

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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.