Home / 21,019.36-31,529.04-7,168

Finding the Fourth Proportional to 21,019.36, 31,529.04 and 7,168

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Solution

The fourth proportional to 21,019.36, 31,529.04 and 7,168 is: 10,752

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,019.36 : 31,529.04 = 7,168 : x
  2. Step 2: Convert to fraction form
    21,019.36/31,529.04 = 7,168/x
  3. Step 3: Cross multiply
    21,019.36x = 31,529.04 × 7,168
  4. Step 4: Simplify right side
    21,019.36x = 226,000,158.72
  5. Step 5: Solve for x
    x = 226,000,158.72/21,019.36
  6. Step 6: Final answer
    x = 10,752

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.