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Finding the Fourth Proportional to 28,335.04, 42,504.08 and 8,612.11

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Solution

The fourth proportional to 28,335.04, 42,504.08 and 8,612.11 is: 12,918.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,335.04 : 42,504.08 = 8,612.11 : x
  2. Step 2: Convert to fraction form
    28,335.04/42,504.08 = 8,612.11/x
  3. Step 3: Cross multiply
    28,335.04x = 42,504.08 × 8,612.11
  4. Step 4: Simplify right side
    28,335.04x = 366,049,556.83
  5. Step 5: Solve for x
    x = 366,049,556.83/28,335.04
  6. Step 6: Final answer
    x = 12,918.62

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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.