Home / 15,371.99-21,213.66-9,322.43

Finding the Fourth Proportional to 15,371.99, 21,213.66 and 9,322.43

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Solution

The fourth proportional to 15,371.99, 21,213.66 and 9,322.43 is: 12,865.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,371.99 : 21,213.66 = 9,322.43 : x
  2. Step 2: Convert to fraction form
    15,371.99/21,213.66 = 9,322.43/x
  3. Step 3: Cross multiply
    15,371.99x = 21,213.66 × 9,322.43
  4. Step 4: Simplify right side
    15,371.99x = 197,762,789.28
  5. Step 5: Solve for x
    x = 197,762,789.28/15,371.99
  6. Step 6: Final answer
    x = 12,865.14

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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.