Home / 14,718.80-20,311.54-8,431.56

Finding the Fourth Proportional to 14,718.80, 20,311.54 and 8,431.56

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Solution

The fourth proportional to 14,718.80, 20,311.54 and 8,431.56 is: 11,635.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,718.80 : 20,311.54 = 8,431.56 : x
  2. Step 2: Convert to fraction form
    14,718.80/20,311.54 = 8,431.56/x
  3. Step 3: Cross multiply
    14,718.80x = 20,311.54 × 8,431.56
  4. Step 4: Simplify right side
    14,718.80x = 171,257,968.20
  5. Step 5: Solve for x
    x = 171,257,968.20/14,718.80
  6. Step 6: Final answer
    x = 11,635.32

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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.