Home / 13,370.18-18,451.12-7,401.68

Finding the Fourth Proportional to 13,370.18, 18,451.12 and 7,401.68

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Solution

The fourth proportional to 13,370.18, 18,451.12 and 7,401.68 is: 10,214.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,370.18 : 18,451.12 = 7,401.68 : x
  2. Step 2: Convert to fraction form
    13,370.18/18,451.12 = 7,401.68/x
  3. Step 3: Cross multiply
    13,370.18x = 18,451.12 × 7,401.68
  4. Step 4: Simplify right side
    13,370.18x = 136,569,285.88
  5. Step 5: Solve for x
    x = 136,569,285.88/13,370.18
  6. Step 6: Final answer
    x = 10,214.47

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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.