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Finding the Fourth Proportional to 28,335.99, 42,505.51 and 8,613.05

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Solution

The fourth proportional to 28,335.99, 42,505.51 and 8,613.05 is: 12,920.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,335.99 : 42,505.51 = 8,613.05 : x
  2. Step 2: Convert to fraction form
    28,335.99/42,505.51 = 8,613.05/x
  3. Step 3: Cross multiply
    28,335.99x = 42,505.51 × 8,613.05
  4. Step 4: Simplify right side
    28,335.99x = 366,102,104.09
  5. Step 5: Solve for x
    x = 366,102,104.09/28,335.99
  6. Step 6: Final answer
    x = 12,920.04

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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.