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Finding the Fourth Proportional to 19,005.46, 28,514.34 and 9,143.46

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Solution

The fourth proportional to 19,005.46, 28,514.34 and 9,143.46 is: 13,718.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,005.46 : 28,514.34 = 9,143.46 : x
  2. Step 2: Convert to fraction form
    19,005.46/28,514.34 = 9,143.46/x
  3. Step 3: Cross multiply
    19,005.46x = 28,514.34 × 9,143.46
  4. Step 4: Simplify right side
    19,005.46x = 260,719,727.22
  5. Step 5: Solve for x
    x = 260,719,727.22/19,005.46
  6. Step 6: Final answer
    x = 13,718.15

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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.