Home / 10,911.29-15,053.63-7,136.60

Finding the Fourth Proportional to 10,911.29, 15,053.63 and 7,136.60

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Solution

The fourth proportional to 10,911.29, 15,053.63 and 7,136.60 is: 9,845.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,911.29 : 15,053.63 = 7,136.60 : x
  2. Step 2: Convert to fraction form
    10,911.29/15,053.63 = 7,136.60/x
  3. Step 3: Cross multiply
    10,911.29x = 15,053.63 × 7,136.60
  4. Step 4: Simplify right side
    10,911.29x = 107,431,624.91
  5. Step 5: Solve for x
    x = 107,431,624.91/10,911.29
  6. Step 6: Final answer
    x = 9,845.92

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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.