Home / 28,878.57-43,314.51-7,817.36

Finding the Fourth Proportional to 28,878.57, 43,314.51 and 7,817.36

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Solution

The fourth proportional to 28,878.57, 43,314.51 and 7,817.36 is: 11,725.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,878.57 : 43,314.51 = 7,817.36 : x
  2. Step 2: Convert to fraction form
    28,878.57/43,314.51 = 7,817.36/x
  3. Step 3: Cross multiply
    28,878.57x = 43,314.51 × 7,817.36
  4. Step 4: Simplify right side
    28,878.57x = 338,604,901.32
  5. Step 5: Solve for x
    x = 338,604,901.32/28,878.57
  6. Step 6: Final answer
    x = 11,725.13

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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.