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Finding the Fourth Proportional to 27,703, 38,230.34 and 15,127.75

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Solution

The fourth proportional to 27,703, 38,230.34 and 15,127.75 is: 20,876.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,703 : 38,230.34 = 15,127.75 : x
  2. Step 2: Convert to fraction form
    27,703/38,230.34 = 15,127.75/x
  3. Step 3: Cross multiply
    27,703x = 38,230.34 × 15,127.75
  4. Step 4: Simplify right side
    27,703x = 578,339,025.94
  5. Step 5: Solve for x
    x = 578,339,025.94/27,703
  6. Step 6: Final answer
    x = 20,876.40

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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.