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Finding the Fourth Proportional to 35,295, 48,707.10 and 20,391

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Solution

The fourth proportional to 35,295, 48,707.10 and 20,391 is: 28,139.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,295 : 48,707.10 = 20,391 : x
  2. Step 2: Convert to fraction form
    35,295/48,707.10 = 20,391/x
  3. Step 3: Cross multiply
    35,295x = 48,707.10 × 20,391
  4. Step 4: Simplify right side
    35,295x = 993,186,476.10
  5. Step 5: Solve for x
    x = 993,186,476.10/35,295
  6. Step 6: Final answer
    x = 28,139.58

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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.