Home / 20,317,475.31-30,476,272.08-8,642,838.86

Finding the Fourth Proportional to 20,317,475.31, 30,476,272.08 and 8,642,838.86

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Solution

The fourth proportional to 20,317,475.31, 30,476,272.08 and 8,642,838.86 is: 12,964,283.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,317,475.31 : 30,476,272.08 = 8,642,838.86 : x
  2. Step 2: Convert to fraction form
    20,317,475.31/30,476,272.08 = 8,642,838.86/x
  3. Step 3: Cross multiply
    20,317,475.31x = 30,476,272.08 × 8,642,838.86
  4. Step 4: Simplify right side
    20,317,475.31x = 263,401,508,488,575.66
  5. Step 5: Solve for x
    x = 263,401,508,488,575.66/20,317,475.31
  6. Step 6: Final answer
    x = 12,964,283.43

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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.