Home / 15,320,997.86-21,143,122.40-8,445,725.96

Finding the Fourth Proportional to 15,320,997.86, 21,143,122.40 and 8,445,725.96

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Solution

The fourth proportional to 15,320,997.86, 21,143,122.40 and 8,445,725.96 is: 11,655,181.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,320,997.86 : 21,143,122.40 = 8,445,725.96 : x
  2. Step 2: Convert to fraction form
    15,320,997.86/21,143,122.40 = 8,445,725.96/x
  3. Step 3: Cross multiply
    15,320,997.86x = 21,143,122.40 × 8,445,725.96
  4. Step 4: Simplify right side
    15,320,997.86x = 178,569,017,644,536.22
  5. Step 5: Solve for x
    x = 178,569,017,644,536.22/15,320,997.86
  6. Step 6: Final answer
    x = 11,655,181.95

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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.