Home / 15,117.44-20,854.80-9,813.92

Finding the Fourth Proportional to 15,117.44, 20,854.80 and 9,813.92

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Solution

The fourth proportional to 15,117.44, 20,854.80 and 9,813.92 is: 13,538.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,117.44 : 20,854.80 = 9,813.92 : x
  2. Step 2: Convert to fraction form
    15,117.44/20,854.80 = 9,813.92/x
  3. Step 3: Cross multiply
    15,117.44x = 20,854.80 × 9,813.92
  4. Step 4: Simplify right side
    15,117.44x = 204,667,338.82
  5. Step 5: Solve for x
    x = 204,667,338.82/15,117.44
  6. Step 6: Final answer
    x = 13,538.49

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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.