Home / 15,728.87-21,706.73-9,015.62

Finding the Fourth Proportional to 15,728.87, 21,706.73 and 9,015.62

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Solution

The fourth proportional to 15,728.87, 21,706.73 and 9,015.62 is: 12,442.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,728.87 : 21,706.73 = 9,015.62 : x
  2. Step 2: Convert to fraction form
    15,728.87/21,706.73 = 9,015.62/x
  3. Step 3: Cross multiply
    15,728.87x = 21,706.73 × 9,015.62
  4. Step 4: Simplify right side
    15,728.87x = 195,699,560.03
  5. Step 5: Solve for x
    x = 195,699,560.03/15,728.87
  6. Step 6: Final answer
    x = 12,442.06

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1.5x scale

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.