Home / 21,116.90-31,675.37-7,074.34

Finding the Fourth Proportional to 21,116.90, 31,675.37 and 7,074.34

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Solution

The fourth proportional to 21,116.90, 31,675.37 and 7,074.34 is: 10,611.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,116.90 : 31,675.37 = 7,074.34 : x
  2. Step 2: Convert to fraction form
    21,116.90/31,675.37 = 7,074.34/x
  3. Step 3: Cross multiply
    21,116.90x = 31,675.37 × 7,074.34
  4. Step 4: Simplify right side
    21,116.90x = 224,082,222.45
  5. Step 5: Solve for x
    x = 224,082,222.45/21,116.90
  6. Step 6: Final answer
    x = 10,611.51

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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.