Home / 25,578.32-38,219.20-20,018.48

Finding the Fourth Proportional to 25,578.32, 38,219.20 and 20,018.48

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Solution

The fourth proportional to 25,578.32, 38,219.20 and 20,018.48 is: 29,911.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,578.32 : 38,219.20 = 20,018.48 : x
  2. Step 2: Convert to fraction form
    25,578.32/38,219.20 = 20,018.48/x
  3. Step 3: Cross multiply
    25,578.32x = 38,219.20 × 20,018.48
  4. Step 4: Simplify right side
    25,578.32x = 765,090,290.82
  5. Step 5: Solve for x
    x = 765,090,290.82/25,578.32
  6. Step 6: Final answer
    x = 29,911.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.