Home / 20,392,286.84-28,142,098.36-11,099,407.72

Finding the Fourth Proportional to 20,392,286.84, 28,142,098.36 and 11,099,407.72

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Solution

The fourth proportional to 20,392,286.84, 28,142,098.36 and 11,099,407.72 is: 15,317,586.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,392,286.84 : 28,142,098.36 = 11,099,407.72 : x
  2. Step 2: Convert to fraction form
    20,392,286.84/28,142,098.36 = 11,099,407.72/x
  3. Step 3: Cross multiply
    20,392,286.84x = 28,142,098.36 × 11,099,407.72
  4. Step 4: Simplify right side
    20,392,286.84x = 312,360,623,793,983.38
  5. Step 5: Solve for x
    x = 312,360,623,793,983.38/20,392,286.84
  6. Step 6: Final answer
    x = 15,317,586.80

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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.