Home / 12,860.60-17,749.52-8,145.32

Finding the Fourth Proportional to 12,860.60, 17,749.52 and 8,145.32

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Solution

The fourth proportional to 12,860.60, 17,749.52 and 8,145.32 is: 11,241.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,860.60 : 17,749.52 = 8,145.32 : x
  2. Step 2: Convert to fraction form
    12,860.60/17,749.52 = 8,145.32/x
  3. Step 3: Cross multiply
    12,860.60x = 17,749.52 × 8,145.32
  4. Step 4: Simplify right side
    12,860.60x = 144,575,520.25
  5. Step 5: Solve for x
    x = 144,575,520.25/12,860.60
  6. Step 6: Final answer
    x = 11,241.74

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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.