Home / 20,725,966.40-31,046,959.20-11,740,020.80

Finding the Fourth Proportional to 20,725,966.40, 31,046,959.20 and 11,740,020.80

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Solution

The fourth proportional to 20,725,966.40, 31,046,959.20 and 11,740,020.80 is: 17,586,246.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,725,966.40 : 31,046,959.20 = 11,740,020.80 : x
  2. Step 2: Convert to fraction form
    20,725,966.40/31,046,959.20 = 11,740,020.80/x
  3. Step 3: Cross multiply
    20,725,966.40x = 31,046,959.20 × 11,740,020.80
  4. Step 4: Simplify right side
    20,725,966.40x = 364,491,946,784,751.38
  5. Step 5: Solve for x
    x = 364,491,946,784,751.38/20,725,966.40
  6. Step 6: Final answer
    x = 17,586,246.15

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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.