Home / 15,816.02-21,825.26-8,742.02

Finding the Fourth Proportional to 15,816.02, 21,825.26 and 8,742.02

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Solution

The fourth proportional to 15,816.02, 21,825.26 and 8,742.02 is: 12,063.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,816.02 : 21,825.26 = 8,742.02 : x
  2. Step 2: Convert to fraction form
    15,816.02/21,825.26 = 8,742.02/x
  3. Step 3: Cross multiply
    15,816.02x = 21,825.26 × 8,742.02
  4. Step 4: Simplify right side
    15,816.02x = 190,796,903.06
  5. Step 5: Solve for x
    x = 190,796,903.06/15,816.02
  6. Step 6: Final answer
    x = 12,063.52

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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.