Home / 15,852.36-21,880.19-9,142.02

Finding the Fourth Proportional to 15,852.36, 21,880.19 and 9,142.02

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Solution

The fourth proportional to 15,852.36, 21,880.19 and 9,142.02 is: 12,618.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,852.36 : 21,880.19 = 9,142.02 : x
  2. Step 2: Convert to fraction form
    15,852.36/21,880.19 = 9,142.02/x
  3. Step 3: Cross multiply
    15,852.36x = 21,880.19 × 9,142.02
  4. Step 4: Simplify right side
    15,852.36x = 200,029,157.44
  5. Step 5: Solve for x
    x = 200,029,157.44/15,852.36
  6. Step 6: Final answer
    x = 12,618.25

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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.