Home / 16,821.20-23,212.70-10,015.22

Finding the Fourth Proportional to 16,821.20, 23,212.70 and 10,015.22

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Solution

The fourth proportional to 16,821.20, 23,212.70 and 10,015.22 is: 13,820.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,821.20 : 23,212.70 = 10,015.22 : x
  2. Step 2: Convert to fraction form
    16,821.20/23,212.70 = 10,015.22/x
  3. Step 3: Cross multiply
    16,821.20x = 23,212.70 × 10,015.22
  4. Step 4: Simplify right side
    16,821.20x = 232,480,297.29
  5. Step 5: Solve for x
    x = 232,480,297.29/16,821.20
  6. Step 6: Final answer
    x = 13,820.67

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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.