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Finding the Fourth Proportional to 12,659.76, 19,003.01 and 10,346.40

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Solution

The fourth proportional to 12,659.76, 19,003.01 and 10,346.40 is: 15,530.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,659.76 : 19,003.01 = 10,346.40 : x
  2. Step 2: Convert to fraction form
    12,659.76/19,003.01 = 10,346.40/x
  3. Step 3: Cross multiply
    12,659.76x = 19,003.01 × 10,346.40
  4. Step 4: Simplify right side
    12,659.76x = 196,612,690.93
  5. Step 5: Solve for x
    x = 196,612,690.93/12,659.76
  6. Step 6: Final answer
    x = 15,530.52

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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.