Home / 12,512.02-18,789.51-11,109.61

Finding the Fourth Proportional to 12,512.02, 18,789.51 and 11,109.61

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Solution

The fourth proportional to 12,512.02, 18,789.51 and 11,109.61 is: 16,683.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,512.02 : 18,789.51 = 11,109.61 : x
  2. Step 2: Convert to fraction form
    12,512.02/18,789.51 = 11,109.61/x
  3. Step 3: Cross multiply
    12,512.02x = 18,789.51 × 11,109.61
  4. Step 4: Simplify right side
    12,512.02x = 208,744,128.19
  5. Step 5: Solve for x
    x = 208,744,128.19/12,512.02
  6. Step 6: Final answer
    x = 16,683.49

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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.