Home / 13,316.22-19,969.14-4,991.70

Finding the Fourth Proportional to 13,316.22, 19,969.14 and 4,991.70

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Solution

The fourth proportional to 13,316.22, 19,969.14 and 4,991.70 is: 7,485.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,316.22 : 19,969.14 = 4,991.70 : x
  2. Step 2: Convert to fraction form
    13,316.22/19,969.14 = 4,991.70/x
  3. Step 3: Cross multiply
    13,316.22x = 19,969.14 × 4,991.70
  4. Step 4: Simplify right side
    13,316.22x = 99,679,867.21
  5. Step 5: Solve for x
    x = 99,679,867.21/13,316.22
  6. Step 6: Final answer
    x = 7,485.60

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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.