Home / 19,818.25-27,350.40-11,434.75

Finding the Fourth Proportional to 19,818.25, 27,350.40 and 11,434.75

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Solution

The fourth proportional to 19,818.25, 27,350.40 and 11,434.75 is: 15,780.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,818.25 : 27,350.40 = 11,434.75 : x
  2. Step 2: Convert to fraction form
    19,818.25/27,350.40 = 11,434.75/x
  3. Step 3: Cross multiply
    19,818.25x = 27,350.40 × 11,434.75
  4. Step 4: Simplify right side
    19,818.25x = 312,744,986.40
  5. Step 5: Solve for x
    x = 312,744,986.40/19,818.25
  6. Step 6: Final answer
    x = 15,780.66

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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.