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Finding the Fourth Proportional to 18,354.72, 25,340.01 and 12,085.32

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Solution

The fourth proportional to 18,354.72, 25,340.01 and 12,085.32 is: 16,684.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,354.72 : 25,340.01 = 12,085.32 : x
  2. Step 2: Convert to fraction form
    18,354.72/25,340.01 = 12,085.32/x
  3. Step 3: Cross multiply
    18,354.72x = 25,340.01 × 12,085.32
  4. Step 4: Simplify right side
    18,354.72x = 306,242,129.65
  5. Step 5: Solve for x
    x = 306,242,129.65/18,354.72
  6. Step 6: Final answer
    x = 16,684.65

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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.