Home / 19,269.84-28,905.75-5,419.92

Finding the Fourth Proportional to 19,269.84, 28,905.75 and 5,419.92

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Solution

The fourth proportional to 19,269.84, 28,905.75 and 5,419.92 is: 8,130.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,269.84 : 28,905.75 = 5,419.92 : x
  2. Step 2: Convert to fraction form
    19,269.84/28,905.75 = 5,419.92/x
  3. Step 3: Cross multiply
    19,269.84x = 28,905.75 × 5,419.92
  4. Step 4: Simplify right side
    19,269.84x = 156,666,852.54
  5. Step 5: Solve for x
    x = 156,666,852.54/19,269.84
  6. Step 6: Final answer
    x = 8,130.16

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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.