Home / 21,138,758.70-31,700,360.53-7,302,197.45

Finding the Fourth Proportional to 21,138,758.70, 31,700,360.53 and 7,302,197.45

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Solution

The fourth proportional to 21,138,758.70, 31,700,360.53 and 7,302,197.45 is: 10,950,609.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,138,758.70 : 31,700,360.53 = 7,302,197.45 : x
  2. Step 2: Convert to fraction form
    21,138,758.70/31,700,360.53 = 7,302,197.45/x
  3. Step 3: Cross multiply
    21,138,758.70x = 31,700,360.53 × 7,302,197.45
  4. Step 4: Simplify right side
    21,138,758.70x = 231,482,291,873,550.44
  5. Step 5: Solve for x
    x = 231,482,291,873,550.44/21,138,758.70
  6. Step 6: Final answer
    x = 10,950,609.50

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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.