Home / 12,122.15-16,690.59-11,014.94

Finding the Fourth Proportional to 12,122.15, 16,690.59 and 11,014.94

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Solution

The fourth proportional to 12,122.15, 16,690.59 and 11,014.94 is: 15,166.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,122.15 : 16,690.59 = 11,014.94 : x
  2. Step 2: Convert to fraction form
    12,122.15/16,690.59 = 11,014.94/x
  3. Step 3: Cross multiply
    12,122.15x = 16,690.59 × 11,014.94
  4. Step 4: Simplify right side
    12,122.15x = 183,845,889.14
  5. Step 5: Solve for x
    x = 183,845,889.14/12,122.15
  6. Step 6: Final answer
    x = 15,166.12

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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.