Home / 11,562.89-15,955.07-6,781.02

Finding the Fourth Proportional to 11,562.89, 15,955.07 and 6,781.02

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Solution

The fourth proportional to 11,562.89, 15,955.07 and 6,781.02 is: 9,356.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,562.89 : 15,955.07 = 6,781.02 : x
  2. Step 2: Convert to fraction form
    11,562.89/15,955.07 = 6,781.02/x
  3. Step 3: Cross multiply
    11,562.89x = 15,955.07 × 6,781.02
  4. Step 4: Simplify right side
    11,562.89x = 108,191,665.72
  5. Step 5: Solve for x
    x = 108,191,665.72/11,562.89
  6. Step 6: Final answer
    x = 9,356.81

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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.