Home / 14,979.80-20,660.44-9,675.92

Finding the Fourth Proportional to 14,979.80, 20,660.44 and 9,675.92

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Solution

The fourth proportional to 14,979.80, 20,660.44 and 9,675.92 is: 13,345.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,979.80 : 20,660.44 = 9,675.92 : x
  2. Step 2: Convert to fraction form
    14,979.80/20,660.44 = 9,675.92/x
  3. Step 3: Cross multiply
    14,979.80x = 20,660.44 × 9,675.92
  4. Step 4: Simplify right side
    14,979.80x = 199,908,764.60
  5. Step 5: Solve for x
    x = 199,908,764.60/14,979.80
  6. Step 6: Final answer
    x = 13,345.22

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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.