Home / 13,368.17-18,447.81-7,399.49

Finding the Fourth Proportional to 13,368.17, 18,447.81 and 7,399.49

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Solution

The fourth proportional to 13,368.17, 18,447.81 and 7,399.49 is: 10,211.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,368.17 : 18,447.81 = 7,399.49 : x
  2. Step 2: Convert to fraction form
    13,368.17/18,447.81 = 7,399.49/x
  3. Step 3: Cross multiply
    13,368.17x = 18,447.81 × 7,399.49
  4. Step 4: Simplify right side
    13,368.17x = 136,504,385.62
  5. Step 5: Solve for x
    x = 136,504,385.62/13,368.17
  6. Step 6: Final answer
    x = 10,211.15

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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.