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Finding the Fourth Proportional to 19,417.92, 29,102.27 and 12,395.82

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Solution

The fourth proportional to 19,417.92, 29,102.27 and 12,395.82 is: 18,578.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,417.92 : 29,102.27 = 12,395.82 : x
  2. Step 2: Convert to fraction form
    19,417.92/29,102.27 = 12,395.82/x
  3. Step 3: Cross multiply
    19,417.92x = 29,102.27 × 12,395.82
  4. Step 4: Simplify right side
    19,417.92x = 360,746,500.51
  5. Step 5: Solve for x
    x = 360,746,500.51/19,417.92
  6. Step 6: Final answer
    x = 18,578.02

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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.