Home / 15,816.53-21,825.29-8,741.81

Finding the Fourth Proportional to 15,816.53, 21,825.29 and 8,741.81

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Solution

The fourth proportional to 15,816.53, 21,825.29 and 8,741.81 is: 12,062.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,816.53 : 21,825.29 = 8,741.81 : x
  2. Step 2: Convert to fraction form
    15,816.53/21,825.29 = 8,741.81/x
  3. Step 3: Cross multiply
    15,816.53x = 21,825.29 × 8,741.81
  4. Step 4: Simplify right side
    15,816.53x = 190,792,451.10
  5. Step 5: Solve for x
    x = 190,792,451.10/15,816.53
  6. Step 6: Final answer
    x = 12,062.86

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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.