Home / 21,311.39-31,967.07-5,729.01

Finding the Fourth Proportional to 21,311.39, 31,967.07 and 5,729.01

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Solution

The fourth proportional to 21,311.39, 31,967.07 and 5,729.01 is: 8,593.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,311.39 : 31,967.07 = 5,729.01 : x
  2. Step 2: Convert to fraction form
    21,311.39/31,967.07 = 5,729.01/x
  3. Step 3: Cross multiply
    21,311.39x = 31,967.07 × 5,729.01
  4. Step 4: Simplify right side
    21,311.39x = 183,139,663.70
  5. Step 5: Solve for x
    x = 183,139,663.70/21,311.39
  6. Step 6: Final answer
    x = 8,593.51

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1.5x scale

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.