Home / 13,219.11-19,810.80-4,891.32

Finding the Fourth Proportional to 13,219.11, 19,810.80 and 4,891.32

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Solution

The fourth proportional to 13,219.11, 19,810.80 and 4,891.32 is: 7,330.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,219.11 : 19,810.80 = 4,891.32 : x
  2. Step 2: Convert to fraction form
    13,219.11/19,810.80 = 4,891.32/x
  3. Step 3: Cross multiply
    13,219.11x = 19,810.80 × 4,891.32
  4. Step 4: Simplify right side
    13,219.11x = 96,900,962.26
  5. Step 5: Solve for x
    x = 96,900,962.26/13,219.11
  6. Step 6: Final answer
    x = 7,330.37

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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.