Home / 26,181.90-39,207.24-20,665.20

Finding the Fourth Proportional to 26,181.90, 39,207.24 and 20,665.20

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Solution

The fourth proportional to 26,181.90, 39,207.24 and 20,665.20 is: 30,946.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,181.90 : 39,207.24 = 20,665.20 : x
  2. Step 2: Convert to fraction form
    26,181.90/39,207.24 = 20,665.20/x
  3. Step 3: Cross multiply
    26,181.90x = 39,207.24 × 20,665.20
  4. Step 4: Simplify right side
    26,181.90x = 810,225,386.52
  5. Step 5: Solve for x
    x = 810,225,386.52/26,181.90
  6. Step 6: Final answer
    x = 30,946.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.