Home / 13,290,411.06-18,340,767.36-7,178,839.56

Finding the Fourth Proportional to 13,290,411.06, 18,340,767.36 and 7,178,839.56

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Solution

The fourth proportional to 13,290,411.06, 18,340,767.36 and 7,178,839.56 is: 9,906,798.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,290,411.06 : 18,340,767.36 = 7,178,839.56 : x
  2. Step 2: Convert to fraction form
    13,290,411.06/18,340,767.36 = 7,178,839.56/x
  3. Step 3: Cross multiply
    13,290,411.06x = 18,340,767.36 × 7,178,839.56
  4. Step 4: Simplify right side
    13,290,411.06x = 131,665,426,284,724.75
  5. Step 5: Solve for x
    x = 131,665,426,284,724.75/13,290,411.06
  6. Step 6: Final answer
    x = 9,906,798.65

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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.