Home / 13,127.10-19,690.80-3,266.40

Finding the Fourth Proportional to 13,127.10, 19,690.80 and 3,266.40

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Solution

The fourth proportional to 13,127.10, 19,690.80 and 3,266.40 is: 4,899.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,127.10 : 19,690.80 = 3,266.40 : x
  2. Step 2: Convert to fraction form
    13,127.10/19,690.80 = 3,266.40/x
  3. Step 3: Cross multiply
    13,127.10x = 19,690.80 × 3,266.40
  4. Step 4: Simplify right side
    13,127.10x = 64,318,029.12
  5. Step 5: Solve for x
    x = 64,318,029.12/13,127.10
  6. Step 6: Final answer
    x = 4,899.64

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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.