Home / 13,291,386.88-18,342,130.26-7,179,815.38

Finding the Fourth Proportional to 13,291,386.88, 18,342,130.26 and 7,179,815.38

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Solution

The fourth proportional to 13,291,386.88, 18,342,130.26 and 7,179,815.38 is: 9,908,154.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,291,386.88 : 18,342,130.26 = 7,179,815.38 : x
  2. Step 2: Convert to fraction form
    13,291,386.88/18,342,130.26 = 7,179,815.38/x
  3. Step 3: Cross multiply
    13,291,386.88x = 18,342,130.26 × 7,179,815.38
  4. Step 4: Simplify right side
    13,291,386.88x = 131,693,108,942,711.41
  5. Step 5: Solve for x
    x = 131,693,108,942,711.41/13,291,386.88
  6. Step 6: Final answer
    x = 9,908,154.06

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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.