Home / 20,407,524.40-28,161,320.80-12,672,400.64

Finding the Fourth Proportional to 20,407,524.40, 28,161,320.80 and 12,672,400.64

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Solution

The fourth proportional to 20,407,524.40, 28,161,320.80 and 12,672,400.64 is: 17,487,252.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,407,524.40 : 28,161,320.80 = 12,672,400.64 : x
  2. Step 2: Convert to fraction form
    20,407,524.40/28,161,320.80 = 12,672,400.64/x
  3. Step 3: Cross multiply
    20,407,524.40x = 28,161,320.80 × 12,672,400.64
  4. Step 4: Simplify right side
    20,407,524.40x = 356,871,539,729,165.31
  5. Step 5: Solve for x
    x = 356,871,539,729,165.31/20,407,524.40
  6. Step 6: Final answer
    x = 17,487,252.87

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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.