Home / 19,983.68-27,599.76-15,560.64

Finding the Fourth Proportional to 19,983.68, 27,599.76 and 15,560.64

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Solution

The fourth proportional to 19,983.68, 27,599.76 and 15,560.64 is: 21,491.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,983.68 : 27,599.76 = 15,560.64 : x
  2. Step 2: Convert to fraction form
    19,983.68/27,599.76 = 15,560.64/x
  3. Step 3: Cross multiply
    19,983.68x = 27,599.76 × 15,560.64
  4. Step 4: Simplify right side
    19,983.68x = 429,469,929.45
  5. Step 5: Solve for x
    x = 429,469,929.45/19,983.68
  6. Step 6: Final answer
    x = 21,491.03

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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.