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Finding the Fourth Proportional to 28,044.86, 42,071.48 and 8,321.10

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Solution

The fourth proportional to 28,044.86, 42,071.48 and 8,321.10 is: 12,482.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,044.86 : 42,071.48 = 8,321.10 : x
  2. Step 2: Convert to fraction form
    28,044.86/42,071.48 = 8,321.10/x
  3. Step 3: Cross multiply
    28,044.86x = 42,071.48 × 8,321.10
  4. Step 4: Simplify right side
    28,044.86x = 350,080,992.23
  5. Step 5: Solve for x
    x = 350,080,992.23/28,044.86
  6. Step 6: Final answer
    x = 12,482.89

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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.