Home / 20,392,299.92-28,142,116.52-11,099,421.04

Finding the Fourth Proportional to 20,392,299.92, 28,142,116.52 and 11,099,421.04

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Solution

The fourth proportional to 20,392,299.92, 28,142,116.52 and 11,099,421.04 is: 15,317,605.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,392,299.92 : 28,142,116.52 = 11,099,421.04 : x
  2. Step 2: Convert to fraction form
    20,392,299.92/28,142,116.52 = 11,099,421.04/x
  3. Step 3: Cross multiply
    20,392,299.92x = 28,142,116.52 × 11,099,421.04
  4. Step 4: Simplify right side
    20,392,299.92x = 312,361,200,212,219.56
  5. Step 5: Solve for x
    x = 312,361,200,212,219.56/20,392,299.92
  6. Step 6: Final answer
    x = 15,317,605.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.