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Finding the Fourth Proportional to 35,354.95, 53,028.78 and 11,980.78

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Solution

The fourth proportional to 35,354.95, 53,028.78 and 11,980.78 is: 17,969.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,354.95 : 53,028.78 = 11,980.78 : x
  2. Step 2: Convert to fraction form
    35,354.95/53,028.78 = 11,980.78/x
  3. Step 3: Cross multiply
    35,354.95x = 53,028.78 × 11,980.78
  4. Step 4: Simplify right side
    35,354.95x = 635,326,146.85
  5. Step 5: Solve for x
    x = 635,326,146.85/35,354.95
  6. Step 6: Final answer
    x = 17,969.93

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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.