Home / 28,705.75-39,617.65-16,130.50

Finding the Fourth Proportional to 28,705.75, 39,617.65 and 16,130.50

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Solution

The fourth proportional to 28,705.75, 39,617.65 and 16,130.50 is: 22,262.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,705.75 : 39,617.65 = 16,130.50 : x
  2. Step 2: Convert to fraction form
    28,705.75/39,617.65 = 16,130.50/x
  3. Step 3: Cross multiply
    28,705.75x = 39,617.65 × 16,130.50
  4. Step 4: Simplify right side
    28,705.75x = 639,052,503.33
  5. Step 5: Solve for x
    x = 639,052,503.33/28,705.75
  6. Step 6: Final answer
    x = 22,262.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.