Home / 15,860.94-21,887.37-8,690.82

Finding the Fourth Proportional to 15,860.94, 21,887.37 and 8,690.82

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Solution

The fourth proportional to 15,860.94, 21,887.37 and 8,690.82 is: 11,992.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,860.94 : 21,887.37 = 8,690.82 : x
  2. Step 2: Convert to fraction form
    15,860.94/21,887.37 = 8,690.82/x
  3. Step 3: Cross multiply
    15,860.94x = 21,887.37 × 8,690.82
  4. Step 4: Simplify right side
    15,860.94x = 190,219,192.94
  5. Step 5: Solve for x
    x = 190,219,192.94/15,860.94
  6. Step 6: Final answer
    x = 11,992.93

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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.