Home / 21,284,446.80-31,926,670.20-20,108,715.60

Finding the Fourth Proportional to 21,284,446.80, 31,926,670.20 and 20,108,715.60

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Solution

The fourth proportional to 21,284,446.80, 31,926,670.20 and 20,108,715.60 is: 30,163,073.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,284,446.80 : 31,926,670.20 = 20,108,715.60 : x
  2. Step 2: Convert to fraction form
    21,284,446.80/31,926,670.20 = 20,108,715.60/x
  3. Step 3: Cross multiply
    21,284,446.80x = 31,926,670.20 × 20,108,715.60
  4. Step 4: Simplify right side
    21,284,446.80x = 642,004,331,106,795.12
  5. Step 5: Solve for x
    x = 642,004,331,106,795.12/21,284,446.80
  6. Step 6: Final answer
    x = 30,163,073.40

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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.