Home / 12,975.20-17,900.44-9,580.32

Finding the Fourth Proportional to 12,975.20, 17,900.44 and 9,580.32

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Solution

The fourth proportional to 12,975.20, 17,900.44 and 9,580.32 is: 13,216.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,975.20 : 17,900.44 = 9,580.32 : x
  2. Step 2: Convert to fraction form
    12,975.20/17,900.44 = 9,580.32/x
  3. Step 3: Cross multiply
    12,975.20x = 17,900.44 × 9,580.32
  4. Step 4: Simplify right side
    12,975.20x = 171,491,943.34
  5. Step 5: Solve for x
    x = 171,491,943.34/12,975.20
  6. Step 6: Final answer
    x = 13,216.90

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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.