Home / 19,270.19-28,905.35-5,419.19

Finding the Fourth Proportional to 19,270.19, 28,905.35 and 5,419.19

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Solution

The fourth proportional to 19,270.19, 28,905.35 and 5,419.19 is: 8,128.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,270.19 : 28,905.35 = 5,419.19 : x
  2. Step 2: Convert to fraction form
    19,270.19/28,905.35 = 5,419.19/x
  3. Step 3: Cross multiply
    19,270.19x = 28,905.35 × 5,419.19
  4. Step 4: Simplify right side
    19,270.19x = 156,643,412.04
  5. Step 5: Solve for x
    x = 156,643,412.04/19,270.19
  6. Step 6: Final answer
    x = 8,128.80

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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.