Home / 19,981.79-27,606.27-15,217.88

Finding the Fourth Proportional to 19,981.79, 27,606.27 and 15,217.88

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Solution

The fourth proportional to 19,981.79, 27,606.27 and 15,217.88 is: 21,024.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,981.79 : 27,606.27 = 15,217.88 : x
  2. Step 2: Convert to fraction form
    19,981.79/27,606.27 = 15,217.88/x
  3. Step 3: Cross multiply
    19,981.79x = 27,606.27 × 15,217.88
  4. Step 4: Simplify right side
    19,981.79x = 420,108,737.54
  5. Step 5: Solve for x
    x = 420,108,737.54/19,981.79
  6. Step 6: Final answer
    x = 21,024.58

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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.