Home / 21,212,618.12-31,805,905.15-8,243,625.86

Finding the Fourth Proportional to 21,212,618.12, 31,805,905.15 and 8,243,625.86

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Solution

The fourth proportional to 21,212,618.12, 31,805,905.15 and 8,243,625.86 is: 12,360,378.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,212,618.12 : 31,805,905.15 = 8,243,625.86 : x
  2. Step 2: Convert to fraction form
    21,212,618.12/31,805,905.15 = 8,243,625.86/x
  3. Step 3: Cross multiply
    21,212,618.12x = 31,805,905.15 × 8,243,625.86
  4. Step 4: Simplify right side
    21,212,618.12x = 262,195,982,119,423.91
  5. Step 5: Solve for x
    x = 262,195,982,119,423.91/21,212,618.12
  6. Step 6: Final answer
    x = 12,360,378.18

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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.