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Finding the Fourth Proportional to 39,401, 54,373.51 and 21,496.38

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Solution

The fourth proportional to 39,401, 54,373.51 and 21,496.38 is: 29,665.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,401 : 54,373.51 = 21,496.38 : x
  2. Step 2: Convert to fraction form
    39,401/54,373.51 = 21,496.38/x
  3. Step 3: Cross multiply
    39,401x = 54,373.51 × 21,496.38
  4. Step 4: Simplify right side
    39,401x = 1,168,833,632.89
  5. Step 5: Solve for x
    x = 1,168,833,632.89/39,401
  6. Step 6: Final answer
    x = 29,665.08

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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.