Home / 21,047,711.40-31,565,006.10-8,272,132.20

Finding the Fourth Proportional to 21,047,711.40, 31,565,006.10 and 8,272,132.20

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Solution

The fourth proportional to 21,047,711.40, 31,565,006.10 and 8,272,132.20 is: 12,405,619.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,047,711.40 : 31,565,006.10 = 8,272,132.20 : x
  2. Step 2: Convert to fraction form
    21,047,711.40/31,565,006.10 = 8,272,132.20/x
  3. Step 3: Cross multiply
    21,047,711.40x = 31,565,006.10 × 8,272,132.20
  4. Step 4: Simplify right side
    21,047,711.40x = 261,109,903,353,006.44
  5. Step 5: Solve for x
    x = 261,109,903,353,006.44/21,047,711.40
  6. Step 6: Final answer
    x = 12,405,619.71

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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.