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Finding the Fourth Proportional to 35,425.56, 53,143.56 and 18,781.32

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Solution

The fourth proportional to 35,425.56, 53,143.56 and 18,781.32 is: 28,174.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,425.56 : 53,143.56 = 18,781.32 : x
  2. Step 2: Convert to fraction form
    35,425.56/53,143.56 = 18,781.32/x
  3. Step 3: Cross multiply
    35,425.56x = 53,143.56 × 18,781.32
  4. Step 4: Simplify right side
    35,425.56x = 998,106,206.30
  5. Step 5: Solve for x
    x = 998,106,206.30/35,425.56
  6. Step 6: Final answer
    x = 28,174.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.