Home / 13,722.49-18,937.07-7,434.87

Finding the Fourth Proportional to 13,722.49, 18,937.07 and 7,434.87

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Solution

The fourth proportional to 13,722.49, 18,937.07 and 7,434.87 is: 10,260.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,722.49 : 18,937.07 = 7,434.87 : x
  2. Step 2: Convert to fraction form
    13,722.49/18,937.07 = 7,434.87/x
  3. Step 3: Cross multiply
    13,722.49x = 18,937.07 × 7,434.87
  4. Step 4: Simplify right side
    13,722.49x = 140,794,653.63
  5. Step 5: Solve for x
    x = 140,794,653.63/13,722.49
  6. Step 6: Final answer
    x = 10,260.14

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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.