Home / 22,081.68-30,459.24-15,783.12

Finding the Fourth Proportional to 22,081.68, 30,459.24 and 15,783.12

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Solution

The fourth proportional to 22,081.68, 30,459.24 and 15,783.12 is: 21,771.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,081.68 : 30,459.24 = 15,783.12 : x
  2. Step 2: Convert to fraction form
    22,081.68/30,459.24 = 15,783.12/x
  3. Step 3: Cross multiply
    22,081.68x = 30,459.24 × 15,783.12
  4. Step 4: Simplify right side
    22,081.68x = 480,741,840.03
  5. Step 5: Solve for x
    x = 480,741,840.03/22,081.68
  6. Step 6: Final answer
    x = 21,771.07

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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.