Home / 13,122,901.80-19,684,352.70-12,115,132.20

Finding the Fourth Proportional to 13,122,901.80, 19,684,352.70 and 12,115,132.20

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Solution

The fourth proportional to 13,122,901.80, 19,684,352.70 and 12,115,132.20 is: 18,172,698.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,122,901.80 : 19,684,352.70 = 12,115,132.20 : x
  2. Step 2: Convert to fraction form
    13,122,901.80/19,684,352.70 = 12,115,132.20/x
  3. Step 3: Cross multiply
    13,122,901.80x = 19,684,352.70 × 12,115,132.20
  4. Step 4: Simplify right side
    13,122,901.80x = 238,478,535,231,926.91
  5. Step 5: Solve for x
    x = 238,478,535,231,926.91/13,122,901.80
  6. Step 6: Final answer
    x = 18,172,698.30

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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.