Home / 20,280.39-27,783.64-19,522.32

Finding the Fourth Proportional to 20,280.39, 27,783.64 and 19,522.32

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Solution

The fourth proportional to 20,280.39, 27,783.64 and 19,522.32 is: 26,745.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,280.39 : 27,783.64 = 19,522.32 : x
  2. Step 2: Convert to fraction form
    20,280.39/27,783.64 = 19,522.32/x
  3. Step 3: Cross multiply
    20,280.39x = 27,783.64 × 19,522.32
  4. Step 4: Simplify right side
    20,280.39x = 542,401,031.06
  5. Step 5: Solve for x
    x = 542,401,031.06/20,280.39
  6. Step 6: Final answer
    x = 26,745.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.