Home / 11,475.43-15,836.79-6,440.07

Finding the Fourth Proportional to 11,475.43, 15,836.79 and 6,440.07

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Solution

The fourth proportional to 11,475.43, 15,836.79 and 6,440.07 is: 8,887.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,475.43 : 15,836.79 = 6,440.07 : x
  2. Step 2: Convert to fraction form
    11,475.43/15,836.79 = 6,440.07/x
  3. Step 3: Cross multiply
    11,475.43x = 15,836.79 × 6,440.07
  4. Step 4: Simplify right side
    11,475.43x = 101,990,036.18
  5. Step 5: Solve for x
    x = 101,990,036.18/11,475.43
  6. Step 6: Final answer
    x = 8,887.69

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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.