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Finding the Fourth Proportional to 28,149.68, 38,842.72 and 16,051.72

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Solution

The fourth proportional to 28,149.68, 38,842.72 and 16,051.72 is: 22,149.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,149.68 : 38,842.72 = 16,051.72 : x
  2. Step 2: Convert to fraction form
    28,149.68/38,842.72 = 16,051.72/x
  3. Step 3: Cross multiply
    28,149.68x = 38,842.72 × 16,051.72
  4. Step 4: Simplify right side
    28,149.68x = 623,492,465.48
  5. Step 5: Solve for x
    x = 623,492,465.48/28,149.68
  6. Step 6: Final answer
    x = 22,149.18

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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.