Home / 21,047,720.06-31,377,021.90-20,716,040.90

Finding the Fourth Proportional to 21,047,720.06, 31,377,021.90 and 20,716,040.90

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Solution

The fourth proportional to 21,047,720.06, 31,377,021.90 and 20,716,040.90 is: 30,882,569.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,047,720.06 : 31,377,021.90 = 20,716,040.90 : x
  2. Step 2: Convert to fraction form
    21,047,720.06/31,377,021.90 = 20,716,040.90/x
  3. Step 3: Cross multiply
    21,047,720.06x = 31,377,021.90 × 20,716,040.90
  4. Step 4: Simplify right side
    21,047,720.06x = 650,007,669,000,595.62
  5. Step 5: Solve for x
    x = 650,007,669,000,595.62/21,047,720.06
  6. Step 6: Final answer
    x = 30,882,569.09

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.