Home / 20,738.21-31,110.45-7,587.45

Finding the Fourth Proportional to 20,738.21, 31,110.45 and 7,587.45

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Solution

The fourth proportional to 20,738.21, 31,110.45 and 7,587.45 is: 11,382.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,738.21 : 31,110.45 = 7,587.45 : x
  2. Step 2: Convert to fraction form
    20,738.21/31,110.45 = 7,587.45/x
  3. Step 3: Cross multiply
    20,738.21x = 31,110.45 × 7,587.45
  4. Step 4: Simplify right side
    20,738.21x = 236,048,945.92
  5. Step 5: Solve for x
    x = 236,048,945.92/20,738.21
  6. Step 6: Final answer
    x = 11,382.32

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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.