Home / 28,166.11-38,871.10-16,230.21

Finding the Fourth Proportional to 28,166.11, 38,871.10 and 16,230.21

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Solution

The fourth proportional to 28,166.11, 38,871.10 and 16,230.21 is: 22,398.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,166.11 : 38,871.10 = 16,230.21 : x
  2. Step 2: Convert to fraction form
    28,166.11/38,871.10 = 16,230.21/x
  3. Step 3: Cross multiply
    28,166.11x = 38,871.10 × 16,230.21
  4. Step 4: Simplify right side
    28,166.11x = 630,886,115.93
  5. Step 5: Solve for x
    x = 630,886,115.93/28,166.11
  6. Step 6: Final answer
    x = 22,398.77

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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.