Home / 14,369.40-21,427.20-12,621.56

Finding the Fourth Proportional to 14,369.40, 21,427.20 and 12,621.56

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Solution

The fourth proportional to 14,369.40, 21,427.20 and 12,621.56 is: 18,820.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,369.40 : 21,427.20 = 12,621.56 : x
  2. Step 2: Convert to fraction form
    14,369.40/21,427.20 = 12,621.56/x
  3. Step 3: Cross multiply
    14,369.40x = 21,427.20 × 12,621.56
  4. Step 4: Simplify right side
    14,369.40x = 270,444,583.30
  5. Step 5: Solve for x
    x = 270,444,583.30/14,369.40
  6. Step 6: Final answer
    x = 18,820.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.