Home / 21,284,448.80-31,926,673.20-20,108,717.60

Finding the Fourth Proportional to 21,284,448.80, 31,926,673.20 and 20,108,717.60

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Solution

The fourth proportional to 21,284,448.80, 31,926,673.20 and 20,108,717.60 is: 30,163,076.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,284,448.80 : 31,926,673.20 = 20,108,717.60 : x
  2. Step 2: Convert to fraction form
    21,284,448.80/31,926,673.20 = 20,108,717.60/x
  3. Step 3: Cross multiply
    21,284,448.80x = 31,926,673.20 × 20,108,717.60
  4. Step 4: Simplify right side
    21,284,448.80x = 642,004,455,286,288.38
  5. Step 5: Solve for x
    x = 642,004,455,286,288.38/21,284,448.80
  6. Step 6: Final answer
    x = 30,163,076.40

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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.