Home / 11,172.51-15,419.43-6,394.23

Finding the Fourth Proportional to 11,172.51, 15,419.43 and 6,394.23

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Solution

The fourth proportional to 11,172.51, 15,419.43 and 6,394.23 is: 8,824.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,172.51 : 15,419.43 = 6,394.23 : x
  2. Step 2: Convert to fraction form
    11,172.51/15,419.43 = 6,394.23/x
  3. Step 3: Cross multiply
    11,172.51x = 15,419.43 × 6,394.23
  4. Step 4: Simplify right side
    11,172.51x = 98,595,381.89
  5. Step 5: Solve for x
    x = 98,595,381.89/11,172.51
  6. Step 6: Final answer
    x = 8,824.82

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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.