Home / 21,115,149.81-31,673,278.22-6,738,203.72

Finding the Fourth Proportional to 21,115,149.81, 31,673,278.22 and 6,738,203.72

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Solution

The fourth proportional to 21,115,149.81, 31,673,278.22 and 6,738,203.72 is: 10,107,482.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,115,149.81 : 31,673,278.22 = 6,738,203.72 : x
  2. Step 2: Convert to fraction form
    21,115,149.81/31,673,278.22 = 6,738,203.72/x
  3. Step 3: Cross multiply
    21,115,149.81x = 31,673,278.22 × 6,738,203.72
  4. Step 4: Simplify right side
    21,115,149.81x = 213,421,000,934,541.56
  5. Step 5: Solve for x
    x = 213,421,000,934,541.56/21,115,149.81
  6. Step 6: Final answer
    x = 10,107,482.20

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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.