Home / 13,370.55-18,449.82-7,402.20

Finding the Fourth Proportional to 13,370.55, 18,449.82 and 7,402.20

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Solution

The fourth proportional to 13,370.55, 18,449.82 and 7,402.20 is: 10,214.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,370.55 : 18,449.82 = 7,402.20 : x
  2. Step 2: Convert to fraction form
    13,370.55/18,449.82 = 7,402.20/x
  3. Step 3: Cross multiply
    13,370.55x = 18,449.82 × 7,402.20
  4. Step 4: Simplify right side
    13,370.55x = 136,569,257.60
  5. Step 5: Solve for x
    x = 136,569,257.60/13,370.55
  6. Step 6: Final answer
    x = 10,214.18

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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.