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Finding the Fourth Proportional to 28,649.58, 42,946.42 and 12,014.61

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Solution

The fourth proportional to 28,649.58, 42,946.42 and 12,014.61 is: 18,010.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,649.58 : 42,946.42 = 12,014.61 : x
  2. Step 2: Convert to fraction form
    28,649.58/42,946.42 = 12,014.61/x
  3. Step 3: Cross multiply
    28,649.58x = 42,946.42 × 12,014.61
  4. Step 4: Simplify right side
    28,649.58x = 515,984,487.20
  5. Step 5: Solve for x
    x = 515,984,487.20/28,649.58
  6. Step 6: Final answer
    x = 18,010.19

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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.