Home / 11,254.83-15,515.19-7,887.47

Finding the Fourth Proportional to 11,254.83, 15,515.19 and 7,887.47

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Solution

The fourth proportional to 11,254.83, 15,515.19 and 7,887.47 is: 10,873.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,254.83 : 15,515.19 = 7,887.47 : x
  2. Step 2: Convert to fraction form
    11,254.83/15,515.19 = 7,887.47/x
  3. Step 3: Cross multiply
    11,254.83x = 15,515.19 × 7,887.47
  4. Step 4: Simplify right side
    11,254.83x = 122,375,518.09
  5. Step 5: Solve for x
    x = 122,375,518.09/11,254.83
  6. Step 6: Final answer
    x = 10,873.16

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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.