Home / 21,583.62-29,783.25-15,921.43

Finding the Fourth Proportional to 21,583.62, 29,783.25 and 15,921.43

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Solution

The fourth proportional to 21,583.62, 29,783.25 and 15,921.43 is: 21,969.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,583.62 : 29,783.25 = 15,921.43 : x
  2. Step 2: Convert to fraction form
    21,583.62/29,783.25 = 15,921.43/x
  3. Step 3: Cross multiply
    21,583.62x = 29,783.25 × 15,921.43
  4. Step 4: Simplify right side
    21,583.62x = 474,191,855.59
  5. Step 5: Solve for x
    x = 474,191,855.59/21,583.62
  6. Step 6: Final answer
    x = 21,969.99

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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.