Home / 11,117.89-15,342.66-6,403.06

Finding the Fourth Proportional to 11,117.89, 15,342.66 and 6,403.06

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Solution

The fourth proportional to 11,117.89, 15,342.66 and 6,403.06 is: 8,836.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,117.89 : 15,342.66 = 6,403.06 : x
  2. Step 2: Convert to fraction form
    11,117.89/15,342.66 = 6,403.06/x
  3. Step 3: Cross multiply
    11,117.89x = 15,342.66 × 6,403.06
  4. Step 4: Simplify right side
    11,117.89x = 98,239,972.54
  5. Step 5: Solve for x
    x = 98,239,972.54/11,117.89
  6. Step 6: Final answer
    x = 8,836.21

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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.