Home / 15,816.60-21,825.80-8,743.28

Finding the Fourth Proportional to 15,816.60, 21,825.80 and 8,743.28

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Solution

The fourth proportional to 15,816.60, 21,825.80 and 8,743.28 is: 12,065.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,816.60 : 21,825.80 = 8,743.28 : x
  2. Step 2: Convert to fraction form
    15,816.60/21,825.80 = 8,743.28/x
  3. Step 3: Cross multiply
    15,816.60x = 21,825.80 × 8,743.28
  4. Step 4: Simplify right side
    15,816.60x = 190,829,080.62
  5. Step 5: Solve for x
    x = 190,829,080.62/15,816.60
  6. Step 6: Final answer
    x = 12,065.11

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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.