Home / 13,370.82-18,451.08-7,402.38

Finding the Fourth Proportional to 13,370.82, 18,451.08 and 7,402.38

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Solution

The fourth proportional to 13,370.82, 18,451.08 and 7,402.38 is: 10,214.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,370.82 : 18,451.08 = 7,402.38 : x
  2. Step 2: Convert to fraction form
    13,370.82/18,451.08 = 7,402.38/x
  3. Step 3: Cross multiply
    13,370.82x = 18,451.08 × 7,402.38
  4. Step 4: Simplify right side
    13,370.82x = 136,581,905.57
  5. Step 5: Solve for x
    x = 136,581,905.57/13,370.82
  6. Step 6: Final answer
    x = 10,214.92

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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.