Home / 15,016.57-20,722.85-8,392.57

Finding the Fourth Proportional to 15,016.57, 20,722.85 and 8,392.57

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Solution

The fourth proportional to 15,016.57, 20,722.85 and 8,392.57 is: 11,581.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,016.57 : 20,722.85 = 8,392.57 : x
  2. Step 2: Convert to fraction form
    15,016.57/20,722.85 = 8,392.57/x
  3. Step 3: Cross multiply
    15,016.57x = 20,722.85 × 8,392.57
  4. Step 4: Simplify right side
    15,016.57x = 173,917,969.22
  5. Step 5: Solve for x
    x = 173,917,969.22/15,016.57
  6. Step 6: Final answer
    x = 11,581.74

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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.