Home / 13,178,190.66-18,185,048.19-7,376,921.70

Finding the Fourth Proportional to 13,178,190.66, 18,185,048.19 and 7,376,921.70

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Solution

The fourth proportional to 13,178,190.66, 18,185,048.19 and 7,376,921.70 is: 10,179,673.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,178,190.66 : 18,185,048.19 = 7,376,921.70 : x
  2. Step 2: Convert to fraction form
    13,178,190.66/18,185,048.19 = 7,376,921.70/x
  3. Step 3: Cross multiply
    13,178,190.66x = 18,185,048.19 × 7,376,921.70
  4. Step 4: Simplify right side
    13,178,190.66x = 134,149,676,608,356.73
  5. Step 5: Solve for x
    x = 134,149,676,608,356.73/13,178,190.66
  6. Step 6: Final answer
    x = 10,179,673.38

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1.5x scale

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.