Home / 11,490.43-15,856.36-6,386.26

Finding the Fourth Proportional to 11,490.43, 15,856.36 and 6,386.26

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Solution

The fourth proportional to 11,490.43, 15,856.36 and 6,386.26 is: 8,812.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,490.43 : 15,856.36 = 6,386.26 : x
  2. Step 2: Convert to fraction form
    11,490.43/15,856.36 = 6,386.26/x
  3. Step 3: Cross multiply
    11,490.43x = 15,856.36 × 6,386.26
  4. Step 4: Simplify right side
    11,490.43x = 101,262,797.97
  5. Step 5: Solve for x
    x = 101,262,797.97/11,490.43
  6. Step 6: Final answer
    x = 8,812.80

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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.