Home / 13,168,290.78-18,172,107.40-7,287,936.38

Finding the Fourth Proportional to 13,168,290.78, 18,172,107.40 and 7,287,936.38

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Solution

The fourth proportional to 13,168,290.78, 18,172,107.40 and 7,287,936.38 is: 10,057,278.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,168,290.78 : 18,172,107.40 = 7,287,936.38 : x
  2. Step 2: Convert to fraction form
    13,168,290.78/18,172,107.40 = 7,287,936.38/x
  3. Step 3: Cross multiply
    13,168,290.78x = 18,172,107.40 × 7,287,936.38
  4. Step 4: Simplify right side
    13,168,290.78x = 132,437,162,621,727.20
  5. Step 5: Solve for x
    x = 132,437,162,621,727.20/13,168,290.78
  6. Step 6: Final answer
    x = 10,057,278.11

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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.