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Finding the Fourth Proportional to 18,680.68, 25,779.54 and 10,183

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Solution

The fourth proportional to 18,680.68, 25,779.54 and 10,183 is: 14,052.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,680.68 : 25,779.54 = 10,183 : x
  2. Step 2: Convert to fraction form
    18,680.68/25,779.54 = 10,183/x
  3. Step 3: Cross multiply
    18,680.68x = 25,779.54 × 10,183
  4. Step 4: Simplify right side
    18,680.68x = 262,513,055.82
  5. Step 5: Solve for x
    x = 262,513,055.82/18,680.68
  6. Step 6: Final answer
    x = 14,052.65

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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.