Home / 13,291,964.78-18,342,927.83-7,180,393.28

Finding the Fourth Proportional to 13,291,964.78, 18,342,927.83 and 7,180,393.28

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Solution

The fourth proportional to 13,291,964.78, 18,342,927.83 and 7,180,393.28 is: 9,908,951.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,291,964.78 : 18,342,927.83 = 7,180,393.28 : x
  2. Step 2: Convert to fraction form
    13,291,964.78/18,342,927.83 = 7,180,393.28/x
  3. Step 3: Cross multiply
    13,291,964.78x = 18,342,927.83 × 7,180,393.28
  4. Step 4: Simplify right side
    13,291,964.78x = 131,709,435,726,056.97
  5. Step 5: Solve for x
    x = 131,709,435,726,056.97/13,291,964.78
  6. Step 6: Final answer
    x = 9,908,951.60

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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.