Home / 10,969.72-15,129.66-6,717.28

Finding the Fourth Proportional to 10,969.72, 15,129.66 and 6,717.28

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Solution

The fourth proportional to 10,969.72, 15,129.66 and 6,717.28 is: 9,264.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,969.72 : 15,129.66 = 6,717.28 : x
  2. Step 2: Convert to fraction form
    10,969.72/15,129.66 = 6,717.28/x
  3. Step 3: Cross multiply
    10,969.72x = 15,129.66 × 6,717.28
  4. Step 4: Simplify right side
    10,969.72x = 101,630,162.52
  5. Step 5: Solve for x
    x = 101,630,162.52/10,969.72
  6. Step 6: Final answer
    x = 9,264.61

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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.