Home / 28,578.44-39,437.36-15,831.11

Finding the Fourth Proportional to 28,578.44, 39,437.36 and 15,831.11

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Solution

The fourth proportional to 28,578.44, 39,437.36 and 15,831.11 is: 21,846.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,578.44 : 39,437.36 = 15,831.11 : x
  2. Step 2: Convert to fraction form
    28,578.44/39,437.36 = 15,831.11/x
  3. Step 3: Cross multiply
    28,578.44x = 39,437.36 × 15,831.11
  4. Step 4: Simplify right side
    28,578.44x = 624,337,105.11
  5. Step 5: Solve for x
    x = 624,337,105.11/28,578.44
  6. Step 6: Final answer
    x = 21,846.44

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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.