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Finding the Fourth Proportional to 19,791.64, 27,312.50 and 10,717.10

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Solution

The fourth proportional to 19,791.64, 27,312.50 and 10,717.10 is: 14,789.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,791.64 : 27,312.50 = 10,717.10 : x
  2. Step 2: Convert to fraction form
    19,791.64/27,312.50 = 10,717.10/x
  3. Step 3: Cross multiply
    19,791.64x = 27,312.50 × 10,717.10
  4. Step 4: Simplify right side
    19,791.64x = 292,710,657.19
  5. Step 5: Solve for x
    x = 292,710,657.19/19,791.64
  6. Step 6: Final answer
    x = 14,789.61

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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.