Home / 11,299.74-15,588.90-7,756.80

Finding the Fourth Proportional to 11,299.74, 15,588.90 and 7,756.80

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Solution

The fourth proportional to 11,299.74, 15,588.90 and 7,756.80 is: 10,701.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,299.74 : 15,588.90 = 7,756.80 : x
  2. Step 2: Convert to fraction form
    11,299.74/15,588.90 = 7,756.80/x
  3. Step 3: Cross multiply
    11,299.74x = 15,588.90 × 7,756.80
  4. Step 4: Simplify right side
    11,299.74x = 120,919,979.52
  5. Step 5: Solve for x
    x = 120,919,979.52/11,299.74
  6. Step 6: Final answer
    x = 10,701.13

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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.