Home / 31,448.21-47,112.34-20,886.28

Finding the Fourth Proportional to 31,448.21, 47,112.34 and 20,886.28

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Solution

The fourth proportional to 31,448.21, 47,112.34 and 20,886.28 is: 31,289.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,448.21 : 47,112.34 = 20,886.28 : x
  2. Step 2: Convert to fraction form
    31,448.21/47,112.34 = 20,886.28/x
  3. Step 3: Cross multiply
    31,448.21x = 47,112.34 × 20,886.28
  4. Step 4: Simplify right side
    31,448.21x = 984,001,325.90
  5. Step 5: Solve for x
    x = 984,001,325.90/31,448.21
  6. Step 6: Final answer
    x = 31,289.59

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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.