Home / 19,971.79-27,677.58-19,689.91

Finding the Fourth Proportional to 19,971.79, 27,677.58 and 19,689.91

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Solution

The fourth proportional to 19,971.79, 27,677.58 and 19,689.91 is: 27,286.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,971.79 : 27,677.58 = 19,689.91 : x
  2. Step 2: Convert to fraction form
    19,971.79/27,677.58 = 19,689.91/x
  3. Step 3: Cross multiply
    19,971.79x = 27,677.58 × 19,689.91
  4. Step 4: Simplify right side
    19,971.79x = 544,969,059.22
  5. Step 5: Solve for x
    x = 544,969,059.22/19,971.79
  6. Step 6: Final answer
    x = 27,286.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.