Home / 13,370.58-18,450.90-7,401.78

Finding the Fourth Proportional to 13,370.58, 18,450.90 and 7,401.78

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Solution

The fourth proportional to 13,370.58, 18,450.90 and 7,401.78 is: 10,214.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,370.58 : 18,450.90 = 7,401.78 : x
  2. Step 2: Convert to fraction form
    13,370.58/18,450.90 = 7,401.78/x
  3. Step 3: Cross multiply
    13,370.58x = 18,450.90 × 7,401.78
  4. Step 4: Simplify right side
    13,370.58x = 136,569,502.60
  5. Step 5: Solve for x
    x = 136,569,502.60/13,370.58
  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.