Home / 15,342.64-21,171.94-8,536.48

Finding the Fourth Proportional to 15,342.64, 21,171.94 and 8,536.48

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Solution

The fourth proportional to 15,342.64, 21,171.94 and 8,536.48 is: 11,779.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,342.64 : 21,171.94 = 8,536.48 : x
  2. Step 2: Convert to fraction form
    15,342.64/21,171.94 = 8,536.48/x
  3. Step 3: Cross multiply
    15,342.64x = 21,171.94 × 8,536.48
  4. Step 4: Simplify right side
    15,342.64x = 180,733,911.20
  5. Step 5: Solve for x
    x = 180,733,911.20/15,342.64
  6. Step 6: Final answer
    x = 11,779.84

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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.