Home / 19,869.30-27,419.58-10,917

Finding the Fourth Proportional to 19,869.30, 27,419.58 and 10,917

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Solution

The fourth proportional to 19,869.30, 27,419.58 and 10,917 is: 15,065.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,869.30 : 27,419.58 = 10,917 : x
  2. Step 2: Convert to fraction form
    19,869.30/27,419.58 = 10,917/x
  3. Step 3: Cross multiply
    19,869.30x = 27,419.58 × 10,917
  4. Step 4: Simplify right side
    19,869.30x = 299,339,554.86
  5. Step 5: Solve for x
    x = 299,339,554.86/19,869.30
  6. Step 6: Final answer
    x = 15,065.43

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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.