Home / 35,971.40-53,940.90-13,777.40

Finding the Fourth Proportional to 35,971.40, 53,940.90 and 13,777.40

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Solution

The fourth proportional to 35,971.40, 53,940.90 and 13,777.40 is: 20,659.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,971.40 : 53,940.90 = 13,777.40 : x
  2. Step 2: Convert to fraction form
    35,971.40/53,940.90 = 13,777.40/x
  3. Step 3: Cross multiply
    35,971.40x = 53,940.90 × 13,777.40
  4. Step 4: Simplify right side
    35,971.40x = 743,165,355.66
  5. Step 5: Solve for x
    x = 743,165,355.66/35,971.40
  6. Step 6: Final answer
    x = 20,659.90

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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.