Home / 21,384,205.30-32,013,322.35-20,138,490.10

Finding the Fourth Proportional to 21,384,205.30, 32,013,322.35 and 20,138,490.10

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Solution

The fourth proportional to 21,384,205.30, 32,013,322.35 and 20,138,490.10 is: 30,148,418.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,384,205.30 : 32,013,322.35 = 20,138,490.10 : x
  2. Step 2: Convert to fraction form
    21,384,205.30/32,013,322.35 = 20,138,490.10/x
  3. Step 3: Cross multiply
    21,384,205.30x = 32,013,322.35 × 20,138,490.10
  4. Step 4: Simplify right side
    21,384,205.30x = 644,699,975,213,583.88
  5. Step 5: Solve for x
    x = 644,699,975,213,583.88/21,384,205.30
  6. Step 6: Final answer
    x = 30,148,418.71

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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.