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Finding the Fourth Proportional to 28,114.16, 38,829.42 and 19,146.08

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Solution

The fourth proportional to 28,114.16, 38,829.42 and 19,146.08 is: 26,443.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,114.16 : 38,829.42 = 19,146.08 : x
  2. Step 2: Convert to fraction form
    28,114.16/38,829.42 = 19,146.08/x
  3. Step 3: Cross multiply
    28,114.16x = 38,829.42 × 19,146.08
  4. Step 4: Simplify right side
    28,114.16x = 743,431,181.67
  5. Step 5: Solve for x
    x = 743,431,181.67/28,114.16
  6. Step 6: Final answer
    x = 26,443.30

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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.