Home / 15,172.02-20,947.12-9,796.86

Finding the Fourth Proportional to 15,172.02, 20,947.12 and 9,796.86

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Solution

The fourth proportional to 15,172.02, 20,947.12 and 9,796.86 is: 13,525.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,172.02 : 20,947.12 = 9,796.86 : x
  2. Step 2: Convert to fraction form
    15,172.02/20,947.12 = 9,796.86/x
  3. Step 3: Cross multiply
    15,172.02x = 20,947.12 × 9,796.86
  4. Step 4: Simplify right side
    15,172.02x = 205,215,977.55
  5. Step 5: Solve for x
    x = 205,215,977.55/15,172.02
  6. Step 6: Final answer
    x = 13,525.95

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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.