Home / 12,721.37-19,078.94-9,941.15

Finding the Fourth Proportional to 12,721.37, 19,078.94 and 9,941.15

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Solution

The fourth proportional to 12,721.37, 19,078.94 and 9,941.15 is: 14,909.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,721.37 : 19,078.94 = 9,941.15 : x
  2. Step 2: Convert to fraction form
    12,721.37/19,078.94 = 9,941.15/x
  3. Step 3: Cross multiply
    12,721.37x = 19,078.94 × 9,941.15
  4. Step 4: Simplify right side
    12,721.37x = 189,666,533.84
  5. Step 5: Solve for x
    x = 189,666,533.84/12,721.37
  6. Step 6: Final answer
    x = 14,909.28

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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.