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Finding the Fourth Proportional to 12,859.60, 19,251.60 and 9,587.20

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Solution

The fourth proportional to 12,859.60, 19,251.60 and 9,587.20 is: 14,352.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,859.60 : 19,251.60 = 9,587.20 : x
  2. Step 2: Convert to fraction form
    12,859.60/19,251.60 = 9,587.20/x
  3. Step 3: Cross multiply
    12,859.60x = 19,251.60 × 9,587.20
  4. Step 4: Simplify right side
    12,859.60x = 184,568,939.52
  5. Step 5: Solve for x
    x = 184,568,939.52/12,859.60
  6. Step 6: Final answer
    x = 14,352.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.