Home / 21,061,559.80-31,556,910.30-18,014,631.40

Finding the Fourth Proportional to 21,061,559.80, 31,556,910.30 and 18,014,631.40

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Solution

The fourth proportional to 21,061,559.80, 31,556,910.30 and 18,014,631.40 is: 26,991,643.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,061,559.80 : 31,556,910.30 = 18,014,631.40 : x
  2. Step 2: Convert to fraction form
    21,061,559.80/31,556,910.30 = 18,014,631.40/x
  3. Step 3: Cross multiply
    21,061,559.80x = 31,556,910.30 × 18,014,631.40
  4. Step 4: Simplify right side
    21,061,559.80x = 568,486,107,177,363.38
  5. Step 5: Solve for x
    x = 568,486,107,177,363.38/21,061,559.80
  6. Step 6: Final answer
    x = 26,991,643.19

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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.