Home / 13,315,809.66-18,375,811.11-7,515,807.90

Finding the Fourth Proportional to 13,315,809.66, 18,375,811.11 and 7,515,807.90

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Solution

The fourth proportional to 13,315,809.66, 18,375,811.11 and 7,515,807.90 is: 10,371,811.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,315,809.66 : 18,375,811.11 = 7,515,807.90 : x
  2. Step 2: Convert to fraction form
    13,315,809.66/18,375,811.11 = 7,515,807.90/x
  3. Step 3: Cross multiply
    13,315,809.66x = 18,375,811.11 × 7,515,807.90
  4. Step 4: Simplify right side
    13,315,809.66x = 138,109,066,309,445.77
  5. Step 5: Solve for x
    x = 138,109,066,309,445.77/13,315,809.66
  6. Step 6: Final answer
    x = 10,371,811.39

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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.