Home / 21,539,921.80-32,309,882.70-20,689,616.20

Finding the Fourth Proportional to 21,539,921.80, 32,309,882.70 and 20,689,616.20

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Solution

The fourth proportional to 21,539,921.80, 32,309,882.70 and 20,689,616.20 is: 31,034,424.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,539,921.80 : 32,309,882.70 = 20,689,616.20 : x
  2. Step 2: Convert to fraction form
    21,539,921.80/32,309,882.70 = 20,689,616.20/x
  3. Step 3: Cross multiply
    21,539,921.80x = 32,309,882.70 × 20,689,616.20
  4. Step 4: Simplify right side
    21,539,921.80x = 668,479,072,530,019.75
  5. Step 5: Solve for x
    x = 668,479,072,530,019.75/21,539,921.80
  6. Step 6: Final answer
    x = 31,034,424.30

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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.