Home / 18,898,985.11-28,352,612.04-6,120,781.51

Finding the Fourth Proportional to 18,898,985.11, 28,352,612.04 and 6,120,781.51

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Solution

The fourth proportional to 18,898,985.11, 28,352,612.04 and 6,120,781.51 is: 9,182,511.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,898,985.11 : 28,352,612.04 = 6,120,781.51 : x
  2. Step 2: Convert to fraction form
    18,898,985.11/28,352,612.04 = 6,120,781.51/x
  3. Step 3: Cross multiply
    18,898,985.11x = 28,352,612.04 × 6,120,781.51
  4. Step 4: Simplify right side
    18,898,985.11x = 173,540,143,534,635.38
  5. Step 5: Solve for x
    x = 173,540,143,534,635.38/18,898,985.11
  6. Step 6: Final answer
    x = 9,182,511.26

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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.