Home / 9,621.18-13,270.84-5,638.41

Finding the Fourth Proportional to 9,621.18, 13,270.84 and 5,638.41

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Solution

The fourth proportional to 9,621.18, 13,270.84 and 5,638.41 is: 7,777.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,621.18 : 13,270.84 = 5,638.41 : x
  2. Step 2: Convert to fraction form
    9,621.18/13,270.84 = 5,638.41/x
  3. Step 3: Cross multiply
    9,621.18x = 13,270.84 × 5,638.41
  4. Step 4: Simplify right side
    9,621.18x = 74,826,422.87
  5. Step 5: Solve for x
    x = 74,826,422.87/9,621.18
  6. Step 6: Final answer
    x = 7,777.26

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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.