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Finding the Fourth Proportional to 28,140.10, 38,837.02 and 16,203.94

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Solution

The fourth proportional to 28,140.10, 38,837.02 and 16,203.94 is: 22,363.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,140.10 : 38,837.02 = 16,203.94 : x
  2. Step 2: Convert to fraction form
    28,140.10/38,837.02 = 16,203.94/x
  3. Step 3: Cross multiply
    28,140.10x = 38,837.02 × 16,203.94
  4. Step 4: Simplify right side
    28,140.10x = 629,312,741.86
  5. Step 5: Solve for x
    x = 629,312,741.86/28,140.10
  6. Step 6: Final answer
    x = 22,363.56

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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.