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Finding the Fourth Proportional to 28,709.77, 39,612.22 and 16,765.51

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Solution

The fourth proportional to 28,709.77, 39,612.22 and 16,765.51 is: 23,132.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,709.77 : 39,612.22 = 16,765.51 : x
  2. Step 2: Convert to fraction form
    28,709.77/39,612.22 = 16,765.51/x
  3. Step 3: Cross multiply
    28,709.77x = 39,612.22 × 16,765.51
  4. Step 4: Simplify right side
    28,709.77x = 664,119,070.53
  5. Step 5: Solve for x
    x = 664,119,070.53/28,709.77
  6. Step 6: Final answer
    x = 23,132.16

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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.