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Finding the Fourth Proportional to 19,224.70, 28,837.05 and 8,128.51

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Solution

The fourth proportional to 19,224.70, 28,837.05 and 8,128.51 is: 12,192.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,224.70 : 28,837.05 = 8,128.51 : x
  2. Step 2: Convert to fraction form
    19,224.70/28,837.05 = 8,128.51/x
  3. Step 3: Cross multiply
    19,224.70x = 28,837.05 × 8,128.51
  4. Step 4: Simplify right side
    19,224.70x = 234,402,249.30
  5. Step 5: Solve for x
    x = 234,402,249.30/19,224.70
  6. Step 6: Final answer
    x = 12,192.77

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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.