Home / 28,137.72-38,792.05-18,048.64

Finding the Fourth Proportional to 28,137.72, 38,792.05 and 18,048.64

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Solution

The fourth proportional to 28,137.72, 38,792.05 and 18,048.64 is: 24,882.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,137.72 : 38,792.05 = 18,048.64 : x
  2. Step 2: Convert to fraction form
    28,137.72/38,792.05 = 18,048.64/x
  3. Step 3: Cross multiply
    28,137.72x = 38,792.05 × 18,048.64
  4. Step 4: Simplify right side
    28,137.72x = 700,143,831.01
  5. Step 5: Solve for x
    x = 700,143,831.01/28,137.72
  6. Step 6: Final answer
    x = 24,882.75

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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.