Home / 13,722.01-18,936.18-7,434.38

Finding the Fourth Proportional to 13,722.01, 18,936.18 and 7,434.38

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Solution

The fourth proportional to 13,722.01, 18,936.18 and 7,434.38 is: 10,259.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,722.01 : 18,936.18 = 7,434.38 : x
  2. Step 2: Convert to fraction form
    13,722.01/18,936.18 = 7,434.38/x
  3. Step 3: Cross multiply
    13,722.01x = 18,936.18 × 7,434.38
  4. Step 4: Simplify right side
    13,722.01x = 140,778,805.21
  5. Step 5: Solve for x
    x = 140,778,805.21/13,722.01
  6. Step 6: Final answer
    x = 10,259.34

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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.