Home / 11,119.07-15,332.69-7,136.91

Finding the Fourth Proportional to 11,119.07, 15,332.69 and 7,136.91

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Solution

The fourth proportional to 11,119.07, 15,332.69 and 7,136.91 is: 9,841.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,119.07 : 15,332.69 = 7,136.91 : x
  2. Step 2: Convert to fraction form
    11,119.07/15,332.69 = 7,136.91/x
  3. Step 3: Cross multiply
    11,119.07x = 15,332.69 × 7,136.91
  4. Step 4: Simplify right side
    11,119.07x = 109,428,046.43
  5. Step 5: Solve for x
    x = 109,428,046.43/11,119.07
  6. Step 6: Final answer
    x = 9,841.47

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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.