Home / 15,254.45-21,051.19-8,540.36

Finding the Fourth Proportional to 15,254.45, 21,051.19 and 8,540.36

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Solution

The fourth proportional to 15,254.45, 21,051.19 and 8,540.36 is: 11,785.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,254.45 : 21,051.19 = 8,540.36 : x
  2. Step 2: Convert to fraction form
    15,254.45/21,051.19 = 8,540.36/x
  3. Step 3: Cross multiply
    15,254.45x = 21,051.19 × 8,540.36
  4. Step 4: Simplify right side
    15,254.45x = 179,784,741.03
  5. Step 5: Solve for x
    x = 179,784,741.03/15,254.45
  6. Step 6: Final answer
    x = 11,785.72

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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.