Home / 10,969.35-15,136.69-6,718.47

Finding the Fourth Proportional to 10,969.35, 15,136.69 and 6,718.47

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Solution

The fourth proportional to 10,969.35, 15,136.69 and 6,718.47 is: 9,270.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,969.35 : 15,136.69 = 6,718.47 : x
  2. Step 2: Convert to fraction form
    10,969.35/15,136.69 = 6,718.47/x
  3. Step 3: Cross multiply
    10,969.35x = 15,136.69 × 6,718.47
  4. Step 4: Simplify right side
    10,969.35x = 101,695,397.66
  5. Step 5: Solve for x
    x = 101,695,397.66/10,969.35
  6. Step 6: Final answer
    x = 9,270.87

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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.