Home / 28,247,741.88-38,979,731.24-15,855,440.81

Finding the Fourth Proportional to 28,247,741.88, 38,979,731.24 and 15,855,440.81

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Solution

The fourth proportional to 28,247,741.88, 38,979,731.24 and 15,855,440.81 is: 21,879,300.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,247,741.88 : 38,979,731.24 = 15,855,440.81 : x
  2. Step 2: Convert to fraction form
    28,247,741.88/38,979,731.24 = 15,855,440.81/x
  3. Step 3: Cross multiply
    28,247,741.88x = 38,979,731.24 × 15,855,440.81
  4. Step 4: Simplify right side
    28,247,741.88x = 618,040,821,386,250.75
  5. Step 5: Solve for x
    x = 618,040,821,386,250.75/28,247,741.88
  6. Step 6: Final answer
    x = 21,879,300.09

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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.