Home / 13,280.19-19,878.15-7,419.03

Finding the Fourth Proportional to 13,280.19, 19,878.15 and 7,419.03

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Solution

The fourth proportional to 13,280.19, 19,878.15 and 7,419.03 is: 11,105.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,280.19 : 19,878.15 = 7,419.03 : x
  2. Step 2: Convert to fraction form
    13,280.19/19,878.15 = 7,419.03/x
  3. Step 3: Cross multiply
    13,280.19x = 19,878.15 × 7,419.03
  4. Step 4: Simplify right side
    13,280.19x = 147,476,591.19
  5. Step 5: Solve for x
    x = 147,476,591.19/13,280.19
  6. Step 6: Final answer
    x = 11,105.01

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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.