Home / 13,193.49-18,207.05-7,143.79

Finding the Fourth Proportional to 13,193.49, 18,207.05 and 7,143.79

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Solution

The fourth proportional to 13,193.49, 18,207.05 and 7,143.79 is: 9,858.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,193.49 : 18,207.05 = 7,143.79 : x
  2. Step 2: Convert to fraction form
    13,193.49/18,207.05 = 7,143.79/x
  3. Step 3: Cross multiply
    13,193.49x = 18,207.05 × 7,143.79
  4. Step 4: Simplify right side
    13,193.49x = 130,067,341.72
  5. Step 5: Solve for x
    x = 130,067,341.72/13,193.49
  6. Step 6: Final answer
    x = 9,858.45

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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.