Home / 20,696.15-31,041.09-7,548.55

Finding the Fourth Proportional to 20,696.15, 31,041.09 and 7,548.55

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Solution

The fourth proportional to 20,696.15, 31,041.09 and 7,548.55 is: 11,321.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,696.15 : 31,041.09 = 7,548.55 : x
  2. Step 2: Convert to fraction form
    20,696.15/31,041.09 = 7,548.55/x
  3. Step 3: Cross multiply
    20,696.15x = 31,041.09 × 7,548.55
  4. Step 4: Simplify right side
    20,696.15x = 234,315,142.32
  5. Step 5: Solve for x
    x = 234,315,142.32/20,696.15
  6. Step 6: Final answer
    x = 11,321.68

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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.