Home / 21,104,325.20-31,666,985.40-8,325,246.80

Finding the Fourth Proportional to 21,104,325.20, 31,666,985.40 and 8,325,246.80

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Solution

The fourth proportional to 21,104,325.20, 31,666,985.40 and 8,325,246.80 is: 12,492,011.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,104,325.20 : 31,666,985.40 = 8,325,246.80 : x
  2. Step 2: Convert to fraction form
    21,104,325.20/31,666,985.40 = 8,325,246.80/x
  3. Step 3: Cross multiply
    21,104,325.20x = 31,666,985.40 × 8,325,246.80
  4. Step 4: Simplify right side
    21,104,325.20x = 263,635,468,866,996.69
  5. Step 5: Solve for x
    x = 263,635,468,866,996.69/21,104,325.20
  6. Step 6: Final answer
    x = 12,492,011.30

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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.