Home / 10,979.79-15,145.92-6,945.36

Finding the Fourth Proportional to 10,979.79, 15,145.92 and 6,945.36

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Solution

The fourth proportional to 10,979.79, 15,145.92 and 6,945.36 is: 9,580.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,979.79 : 15,145.92 = 6,945.36 : x
  2. Step 2: Convert to fraction form
    10,979.79/15,145.92 = 6,945.36/x
  3. Step 3: Cross multiply
    10,979.79x = 15,145.92 × 6,945.36
  4. Step 4: Simplify right side
    10,979.79x = 105,193,866.93
  5. Step 5: Solve for x
    x = 105,193,866.93/10,979.79
  6. Step 6: Final answer
    x = 9,580.68

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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.