Home / 19,147.20-28,742.40-11,360.40

Finding the Fourth Proportional to 19,147.20, 28,742.40 and 11,360.40

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Solution

The fourth proportional to 19,147.20, 28,742.40 and 11,360.40 is: 17,053.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,147.20 : 28,742.40 = 11,360.40 : x
  2. Step 2: Convert to fraction form
    19,147.20/28,742.40 = 11,360.40/x
  3. Step 3: Cross multiply
    19,147.20x = 28,742.40 × 11,360.40
  4. Step 4: Simplify right side
    19,147.20x = 326,525,160.96
  5. Step 5: Solve for x
    x = 326,525,160.96/19,147.20
  6. Step 6: Final answer
    x = 17,053.42

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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.