Home / 11,457.29-15,809.66-6,979.42

Finding the Fourth Proportional to 11,457.29, 15,809.66 and 6,979.42

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Solution

The fourth proportional to 11,457.29, 15,809.66 and 6,979.42 is: 9,630.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,457.29 : 15,809.66 = 6,979.42 : x
  2. Step 2: Convert to fraction form
    11,457.29/15,809.66 = 6,979.42/x
  3. Step 3: Cross multiply
    11,457.29x = 15,809.66 × 6,979.42
  4. Step 4: Simplify right side
    11,457.29x = 110,342,143.25
  5. Step 5: Solve for x
    x = 110,342,143.25/11,457.29
  6. Step 6: Final answer
    x = 9,630.74

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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.