Home / 15,172,215.72-20,939,575.18-9,949,617.70

Finding the Fourth Proportional to 15,172,215.72, 20,939,575.18 and 9,949,617.70

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Solution

The fourth proportional to 15,172,215.72, 20,939,575.18 and 9,949,617.70 is: 13,731,729.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,172,215.72 : 20,939,575.18 = 9,949,617.70 : x
  2. Step 2: Convert to fraction form
    15,172,215.72/20,939,575.18 = 9,949,617.70/x
  3. Step 3: Cross multiply
    15,172,215.72x = 20,939,575.18 × 9,949,617.70
  4. Step 4: Simplify right side
    15,172,215.72x = 208,340,767,841,408.66
  5. Step 5: Solve for x
    x = 208,340,767,841,408.66/15,172,215.72
  6. Step 6: Final answer
    x = 13,731,729.87

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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.