Home / 20,802.06-31,176.09-15,853.50

Finding the Fourth Proportional to 20,802.06, 31,176.09 and 15,853.50

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Solution

The fourth proportional to 20,802.06, 31,176.09 and 15,853.50 is: 23,759.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,802.06 : 31,176.09 = 15,853.50 : x
  2. Step 2: Convert to fraction form
    20,802.06/31,176.09 = 15,853.50/x
  3. Step 3: Cross multiply
    20,802.06x = 31,176.09 × 15,853.50
  4. Step 4: Simplify right side
    20,802.06x = 494,250,142.82
  5. Step 5: Solve for x
    x = 494,250,142.82/20,802.06
  6. Step 6: Final answer
    x = 23,759.67

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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.