Home / 11,151.51-15,389.06-6,435.79

Finding the Fourth Proportional to 11,151.51, 15,389.06 and 6,435.79

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Solution

The fourth proportional to 11,151.51, 15,389.06 and 6,435.79 is: 8,881.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,151.51 : 15,389.06 = 6,435.79 : x
  2. Step 2: Convert to fraction form
    11,151.51/15,389.06 = 6,435.79/x
  3. Step 3: Cross multiply
    11,151.51x = 15,389.06 × 6,435.79
  4. Step 4: Simplify right side
    11,151.51x = 99,040,687.81
  5. Step 5: Solve for x
    x = 99,040,687.81/11,151.51
  6. Step 6: Final answer
    x = 8,881.37

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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.