Home / 35,781.07-53,638.76-12,391.10

Finding the Fourth Proportional to 35,781.07, 53,638.76 and 12,391.10

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Solution

The fourth proportional to 35,781.07, 53,638.76 and 12,391.10 is: 18,575.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,781.07 : 53,638.76 = 12,391.10 : x
  2. Step 2: Convert to fraction form
    35,781.07/53,638.76 = 12,391.10/x
  3. Step 3: Cross multiply
    35,781.07x = 53,638.76 × 12,391.10
  4. Step 4: Simplify right side
    35,781.07x = 664,643,284.12
  5. Step 5: Solve for x
    x = 664,643,284.12/35,781.07
  6. Step 6: Final answer
    x = 18,575.28

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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.