Home / 13,269,128.13-18,304,373.84-9,131,976.78

Finding the Fourth Proportional to 13,269,128.13, 18,304,373.84 and 9,131,976.78

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Solution

The fourth proportional to 13,269,128.13, 18,304,373.84 and 9,131,976.78 is: 12,597,294.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,269,128.13 : 18,304,373.84 = 9,131,976.78 : x
  2. Step 2: Convert to fraction form
    13,269,128.13/18,304,373.84 = 9,131,976.78/x
  3. Step 3: Cross multiply
    13,269,128.13x = 18,304,373.84 × 9,131,976.78
  4. Step 4: Simplify right side
    13,269,128.13x = 167,155,116,879,319.41
  5. Step 5: Solve for x
    x = 167,155,116,879,319.41/13,269,128.13
  6. Step 6: Final answer
    x = 12,597,294.66

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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.