Home / 20,729,449.72-28,606,740-11,437,019.30

Finding the Fourth Proportional to 20,729,449.72, 28,606,740 and 11,437,019.30

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Solution

The fourth proportional to 20,729,449.72, 28,606,740 and 11,437,019.30 is: 15,783,141.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,729,449.72 : 28,606,740 = 11,437,019.30 : x
  2. Step 2: Convert to fraction form
    20,729,449.72/28,606,740 = 11,437,019.30/x
  3. Step 3: Cross multiply
    20,729,449.72x = 28,606,740 × 11,437,019.30
  4. Step 4: Simplify right side
    20,729,449.72x = 327,175,837,490,082
  5. Step 5: Solve for x
    x = 327,175,837,490,082/20,729,449.72
  6. Step 6: Final answer
    x = 15,783,141.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.