Home / 13,345.38-18,415.22-7,376.09

Finding the Fourth Proportional to 13,345.38, 18,415.22 and 7,376.09

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Solution

The fourth proportional to 13,345.38, 18,415.22 and 7,376.09 is: 10,178.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,345.38 : 18,415.22 = 7,376.09 : x
  2. Step 2: Convert to fraction form
    13,345.38/18,415.22 = 7,376.09/x
  3. Step 3: Cross multiply
    13,345.38x = 18,415.22 × 7,376.09
  4. Step 4: Simplify right side
    13,345.38x = 135,832,191.13
  5. Step 5: Solve for x
    x = 135,832,191.13/13,345.38
  6. Step 6: Final answer
    x = 10,178.22

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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.