Home / 15,507.44-21,400.37-8,433.91

Finding the Fourth Proportional to 15,507.44, 21,400.37 and 8,433.91

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Solution

The fourth proportional to 15,507.44, 21,400.37 and 8,433.91 is: 11,638.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,507.44 : 21,400.37 = 8,433.91 : x
  2. Step 2: Convert to fraction form
    15,507.44/21,400.37 = 8,433.91/x
  3. Step 3: Cross multiply
    15,507.44x = 21,400.37 × 8,433.91
  4. Step 4: Simplify right side
    15,507.44x = 180,488,794.55
  5. Step 5: Solve for x
    x = 180,488,794.55/15,507.44
  6. Step 6: Final answer
    x = 11,638.85

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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.