Home / 13,370.05-18,449.13-7,401.70

Finding the Fourth Proportional to 13,370.05, 18,449.13 and 7,401.70

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Solution

The fourth proportional to 13,370.05, 18,449.13 and 7,401.70 is: 10,213.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,370.05 : 18,449.13 = 7,401.70 : x
  2. Step 2: Convert to fraction form
    13,370.05/18,449.13 = 7,401.70/x
  3. Step 3: Cross multiply
    13,370.05x = 18,449.13 × 7,401.70
  4. Step 4: Simplify right side
    13,370.05x = 136,554,925.52
  5. Step 5: Solve for x
    x = 136,554,925.52/13,370.05
  6. Step 6: Final answer
    x = 10,213.49

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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.