Home / 14,920,317.21-20,561,895.05-13,072,739.61

Finding the Fourth Proportional to 14,920,317.21, 20,561,895.05 and 13,072,739.61

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Solution

The fourth proportional to 14,920,317.21, 20,561,895.05 and 13,072,739.61 is: 18,015,722.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,920,317.21 : 20,561,895.05 = 13,072,739.61 : x
  2. Step 2: Convert to fraction form
    14,920,317.21/20,561,895.05 = 13,072,739.61/x
  3. Step 3: Cross multiply
    14,920,317.21x = 20,561,895.05 × 13,072,739.61
  4. Step 4: Simplify right side
    14,920,317.21x = 268,800,299,811,434.25
  5. Step 5: Solve for x
    x = 268,800,299,811,434.25/14,920,317.21
  6. Step 6: Final answer
    x = 18,015,722.86

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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.