Home / 21,384,153.80-32,013,245.10-20,138,438.60

Finding the Fourth Proportional to 21,384,153.80, 32,013,245.10 and 20,138,438.60

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Solution

The fourth proportional to 21,384,153.80, 32,013,245.10 and 20,138,438.60 is: 30,148,341.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,384,153.80 : 32,013,245.10 = 20,138,438.60 : x
  2. Step 2: Convert to fraction form
    21,384,153.80/32,013,245.10 = 20,138,438.60/x
  3. Step 3: Cross multiply
    21,384,153.80x = 32,013,245.10 × 20,138,438.60
  4. Step 4: Simplify right side
    21,384,153.80x = 644,696,770,833,101
  5. Step 5: Solve for x
    x = 644,696,770,833,101/21,384,153.80
  6. Step 6: Final answer
    x = 30,148,341.47

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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.