Home / 20,392,367.63-28,142,209.89-11,099,488.86

Finding the Fourth Proportional to 20,392,367.63, 28,142,209.89 and 11,099,488.86

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Solution

The fourth proportional to 20,392,367.63, 28,142,209.89 and 11,099,488.86 is: 15,317,698.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,392,367.63 : 28,142,209.89 = 11,099,488.86 : x
  2. Step 2: Convert to fraction form
    20,392,367.63/28,142,209.89 = 11,099,488.86/x
  3. Step 3: Cross multiply
    20,392,367.63x = 28,142,209.89 × 11,099,488.86
  4. Step 4: Simplify right side
    20,392,367.63x = 312,364,145,169,836.81
  5. Step 5: Solve for x
    x = 312,364,145,169,836.81/20,392,367.63
  6. Step 6: Final answer
    x = 15,317,698.80

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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.