Home / 11,434.40-17,151.60-10,128.80

Finding the Fourth Proportional to 11,434.40, 17,151.60 and 10,128.80

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Solution

The fourth proportional to 11,434.40, 17,151.60 and 10,128.80 is: 15,193.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,434.40 : 17,151.60 = 10,128.80 : x
  2. Step 2: Convert to fraction form
    11,434.40/17,151.60 = 10,128.80/x
  3. Step 3: Cross multiply
    11,434.40x = 17,151.60 × 10,128.80
  4. Step 4: Simplify right side
    11,434.40x = 173,725,126.08
  5. Step 5: Solve for x
    x = 173,725,126.08/11,434.40
  6. Step 6: Final answer
    x = 15,193.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.