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Finding the Fourth Proportional to 19,487, 26,892.24 and 11,103.68

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Solution

The fourth proportional to 19,487, 26,892.24 and 11,103.68 is: 15,323.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,487 : 26,892.24 = 11,103.68 : x
  2. Step 2: Convert to fraction form
    19,487/26,892.24 = 11,103.68/x
  3. Step 3: Cross multiply
    19,487x = 26,892.24 × 11,103.68
  4. Step 4: Simplify right side
    19,487x = 298,602,827.44
  5. Step 5: Solve for x
    x = 298,602,827.44/19,487
  6. Step 6: Final answer
    x = 15,323.18

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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.