Home / 28,781.22-43,099.74-18,219.36

Finding the Fourth Proportional to 28,781.22, 43,099.74 and 18,219.36

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Solution

The fourth proportional to 28,781.22, 43,099.74 and 18,219.36 is: 27,283.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,781.22 : 43,099.74 = 18,219.36 : x
  2. Step 2: Convert to fraction form
    28,781.22/43,099.74 = 18,219.36/x
  3. Step 3: Cross multiply
    28,781.22x = 43,099.74 × 18,219.36
  4. Step 4: Simplify right side
    28,781.22x = 785,249,678.97
  5. Step 5: Solve for x
    x = 785,249,678.97/28,781.22
  6. Step 6: Final answer
    x = 27,283.40

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1.5x scale

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.