Home / 20,780,001.30-31,172,954.40-6,401,569.80

Finding the Fourth Proportional to 20,780,001.30, 31,172,954.40 and 6,401,569.80

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Solution

The fourth proportional to 20,780,001.30, 31,172,954.40 and 6,401,569.80 is: 9,603,264.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,780,001.30 : 31,172,954.40 = 6,401,569.80 : x
  2. Step 2: Convert to fraction form
    20,780,001.30/31,172,954.40 = 6,401,569.80/x
  3. Step 3: Cross multiply
    20,780,001.30x = 31,172,954.40 × 6,401,569.80
  4. Step 4: Simplify right side
    20,780,001.30x = 199,555,843,463,817.09
  5. Step 5: Solve for x
    x = 199,555,843,463,817.09/20,780,001.30
  6. Step 6: Final answer
    x = 9,603,264.24

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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.