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Finding the Fourth Proportional to 19,143.77, 28,686.42 and 8,044.40

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Solution

The fourth proportional to 19,143.77, 28,686.42 and 8,044.40 is: 12,054.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,143.77 : 28,686.42 = 8,044.40 : x
  2. Step 2: Convert to fraction form
    19,143.77/28,686.42 = 8,044.40/x
  3. Step 3: Cross multiply
    19,143.77x = 28,686.42 × 8,044.40
  4. Step 4: Simplify right side
    19,143.77x = 230,765,108.76
  5. Step 5: Solve for x
    x = 230,765,108.76/19,143.77
  6. Step 6: Final answer
    x = 12,054.32

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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.