Home / 20,124,513.10-30,172,007.40-7,987,975.30

Finding the Fourth Proportional to 20,124,513.10, 30,172,007.40 and 7,987,975.30

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Solution

The fourth proportional to 20,124,513.10, 30,172,007.40 and 7,987,975.30 is: 11,976,103.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,124,513.10 : 30,172,007.40 = 7,987,975.30 : x
  2. Step 2: Convert to fraction form
    20,124,513.10/30,172,007.40 = 7,987,975.30/x
  3. Step 3: Cross multiply
    20,124,513.10x = 30,172,007.40 × 7,987,975.30
  4. Step 4: Simplify right side
    20,124,513.10x = 241,013,249,862,617.19
  5. Step 5: Solve for x
    x = 241,013,249,862,617.19/20,124,513.10
  6. Step 6: Final answer
    x = 11,976,103.41

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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.