Home / 21,214.14-31,810.34-11,224.28

Finding the Fourth Proportional to 21,214.14, 31,810.34 and 11,224.28

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Solution

The fourth proportional to 21,214.14, 31,810.34 and 11,224.28 is: 16,830.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,214.14 : 31,810.34 = 11,224.28 : x
  2. Step 2: Convert to fraction form
    21,214.14/31,810.34 = 11,224.28/x
  3. Step 3: Cross multiply
    21,214.14x = 31,810.34 × 11,224.28
  4. Step 4: Simplify right side
    21,214.14x = 357,048,163.06
  5. Step 5: Solve for x
    x = 357,048,163.06/21,214.14
  6. Step 6: Final answer
    x = 16,830.67

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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.