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Finding the Fourth Proportional to 12,718.96, 19,094.01 and 12,217.28

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Solution

The fourth proportional to 12,718.96, 19,094.01 and 12,217.28 is: 18,340.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,718.96 : 19,094.01 = 12,217.28 : x
  2. Step 2: Convert to fraction form
    12,718.96/19,094.01 = 12,217.28/x
  3. Step 3: Cross multiply
    12,718.96x = 19,094.01 × 12,217.28
  4. Step 4: Simplify right side
    12,718.96x = 233,276,818.76
  5. Step 5: Solve for x
    x = 233,276,818.76/12,718.96
  6. Step 6: Final answer
    x = 18,340.87

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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.