Home / 15,934.66-21,990.54-9,220.60

Finding the Fourth Proportional to 15,934.66, 21,990.54 and 9,220.60

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Solution

The fourth proportional to 15,934.66, 21,990.54 and 9,220.60 is: 12,724.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,934.66 : 21,990.54 = 9,220.60 : x
  2. Step 2: Convert to fraction form
    15,934.66/21,990.54 = 9,220.60/x
  3. Step 3: Cross multiply
    15,934.66x = 21,990.54 × 9,220.60
  4. Step 4: Simplify right side
    15,934.66x = 202,765,973.12
  5. Step 5: Solve for x
    x = 202,765,973.12/15,934.66
  6. Step 6: Final answer
    x = 12,724.84

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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.