Home / 28,918.80-43,407.36-19,529.28

Finding the Fourth Proportional to 28,918.80, 43,407.36 and 19,529.28

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Solution

The fourth proportional to 28,918.80, 43,407.36 and 19,529.28 is: 29,313.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,918.80 : 43,407.36 = 19,529.28 : x
  2. Step 2: Convert to fraction form
    28,918.80/43,407.36 = 19,529.28/x
  3. Step 3: Cross multiply
    28,918.80x = 43,407.36 × 19,529.28
  4. Step 4: Simplify right side
    28,918.80x = 847,714,487.50
  5. Step 5: Solve for x
    x = 847,714,487.50/28,918.80
  6. Step 6: Final answer
    x = 29,313.61

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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.