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Finding the Fourth Proportional to 28,051.71, 38,712.50 and 16,118.79

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Solution

The fourth proportional to 28,051.71, 38,712.50 and 16,118.79 is: 22,244.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,051.71 : 38,712.50 = 16,118.79 : x
  2. Step 2: Convert to fraction form
    28,051.71/38,712.50 = 16,118.79/x
  3. Step 3: Cross multiply
    28,051.71x = 38,712.50 × 16,118.79
  4. Step 4: Simplify right side
    28,051.71x = 623,998,657.88
  5. Step 5: Solve for x
    x = 623,998,657.88/28,051.71
  6. Step 6: Final answer
    x = 22,244.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.