Home / 13,621.24-20,427.90-4,851.40

Finding the Fourth Proportional to 13,621.24, 20,427.90 and 4,851.40

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Solution

The fourth proportional to 13,621.24, 20,427.90 and 4,851.40 is: 7,275.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,621.24 : 20,427.90 = 4,851.40 : x
  2. Step 2: Convert to fraction form
    13,621.24/20,427.90 = 4,851.40/x
  3. Step 3: Cross multiply
    13,621.24x = 20,427.90 × 4,851.40
  4. Step 4: Simplify right side
    13,621.24x = 99,103,914.06
  5. Step 5: Solve for x
    x = 99,103,914.06/13,621.24
  6. Step 6: Final answer
    x = 7,275.69

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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.