Home / 21,266,246.40-31,899,369.60-9,907,843.20

Finding the Fourth Proportional to 21,266,246.40, 31,899,369.60 and 9,907,843.20

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Solution

The fourth proportional to 21,266,246.40, 31,899,369.60 and 9,907,843.20 is: 14,861,764.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,266,246.40 : 31,899,369.60 = 9,907,843.20 : x
  2. Step 2: Convert to fraction form
    21,266,246.40/31,899,369.60 = 9,907,843.20/x
  3. Step 3: Cross multiply
    21,266,246.40x = 31,899,369.60 × 9,907,843.20
  4. Step 4: Simplify right side
    21,266,246.40x = 316,053,952,175,646.69
  5. Step 5: Solve for x
    x = 316,053,952,175,646.69/21,266,246.40
  6. Step 6: Final answer
    x = 14,861,764.80

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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.