Home / 21,851,785.13-30,156,177.20-11,929,196.88

Finding the Fourth Proportional to 21,851,785.13, 30,156,177.20 and 11,929,196.88

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Solution

The fourth proportional to 21,851,785.13, 30,156,177.20 and 11,929,196.88 is: 16,462,681.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,851,785.13 : 30,156,177.20 = 11,929,196.88 : x
  2. Step 2: Convert to fraction form
    21,851,785.13/30,156,177.20 = 11,929,196.88/x
  3. Step 3: Cross multiply
    21,851,785.13x = 30,156,177.20 × 11,929,196.88
  4. Step 4: Simplify right side
    21,851,785.13x = 359,738,974,907,321.19
  5. Step 5: Solve for x
    x = 359,738,974,907,321.19/21,851,785.13
  6. Step 6: Final answer
    x = 16,462,681.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.