Home / 13,621.47-20,432.24-4,261.55

Finding the Fourth Proportional to 13,621.47, 20,432.24 and 4,261.55

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Solution

The fourth proportional to 13,621.47, 20,432.24 and 4,261.55 is: 6,392.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,621.47 : 20,432.24 = 4,261.55 : x
  2. Step 2: Convert to fraction form
    13,621.47/20,432.24 = 4,261.55/x
  3. Step 3: Cross multiply
    13,621.47x = 20,432.24 × 4,261.55
  4. Step 4: Simplify right side
    13,621.47x = 87,073,012.37
  5. Step 5: Solve for x
    x = 87,073,012.37/13,621.47
  6. Step 6: Final answer
    x = 6,392.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.