Home / 21,213.52-31,811.54-9,206.44

Finding the Fourth Proportional to 21,213.52, 31,811.54 and 9,206.44

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Solution

The fourth proportional to 21,213.52, 31,811.54 and 9,206.44 is: 13,805.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,213.52 : 31,811.54 = 9,206.44 : x
  2. Step 2: Convert to fraction form
    21,213.52/31,811.54 = 9,206.44/x
  3. Step 3: Cross multiply
    21,213.52x = 31,811.54 × 9,206.44
  4. Step 4: Simplify right side
    21,213.52x = 292,871,034.32
  5. Step 5: Solve for x
    x = 292,871,034.32/21,213.52
  6. Step 6: Final answer
    x = 13,805.87

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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.