Home / 20,478,932.36-28,261,022.97-11,186,631.35

Finding the Fourth Proportional to 20,478,932.36, 28,261,022.97 and 11,186,631.35

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Solution

The fourth proportional to 20,478,932.36, 28,261,022.97 and 11,186,631.35 is: 15,437,603.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,478,932.36 : 28,261,022.97 = 11,186,631.35 : x
  2. Step 2: Convert to fraction form
    20,478,932.36/28,261,022.97 = 11,186,631.35/x
  3. Step 3: Cross multiply
    20,478,932.36x = 28,261,022.97 × 11,186,631.35
  4. Step 4: Simplify right side
    20,478,932.36x = 316,145,645,397,967
  5. Step 5: Solve for x
    x = 316,145,645,397,967/20,478,932.36
  6. Step 6: Final answer
    x = 15,437,603.87

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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.