Home / 9,913.21-13,680.22-5,436.97

Finding the Fourth Proportional to 9,913.21, 13,680.22 and 5,436.97

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Solution

The fourth proportional to 9,913.21, 13,680.22 and 5,436.97 is: 7,503.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,913.21 : 13,680.22 = 5,436.97 : x
  2. Step 2: Convert to fraction form
    9,913.21/13,680.22 = 5,436.97/x
  3. Step 3: Cross multiply
    9,913.21x = 13,680.22 × 5,436.97
  4. Step 4: Simplify right side
    9,913.21x = 74,378,969.79
  5. Step 5: Solve for x
    x = 74,378,969.79/9,913.21
  6. Step 6: Final answer
    x = 7,503.02

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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.