Home / 15,485.42-21,375.34-9,197.76

Finding the Fourth Proportional to 15,485.42, 21,375.34 and 9,197.76

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Solution

The fourth proportional to 15,485.42, 21,375.34 and 9,197.76 is: 12,696.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,485.42 : 21,375.34 = 9,197.76 : x
  2. Step 2: Convert to fraction form
    15,485.42/21,375.34 = 9,197.76/x
  3. Step 3: Cross multiply
    15,485.42x = 21,375.34 × 9,197.76
  4. Step 4: Simplify right side
    15,485.42x = 196,605,247.24
  5. Step 5: Solve for x
    x = 196,605,247.24/15,485.42
  6. Step 6: Final answer
    x = 12,696.15

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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.