Home / 12,702.28-19,012.02-11,489.80

Finding the Fourth Proportional to 12,702.28, 19,012.02 and 11,489.80

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Solution

The fourth proportional to 12,702.28, 19,012.02 and 11,489.80 is: 17,197.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,702.28 : 19,012.02 = 11,489.80 : x
  2. Step 2: Convert to fraction form
    12,702.28/19,012.02 = 11,489.80/x
  3. Step 3: Cross multiply
    12,702.28x = 19,012.02 × 11,489.80
  4. Step 4: Simplify right side
    12,702.28x = 218,444,307.40
  5. Step 5: Solve for x
    x = 218,444,307.40/12,702.28
  6. Step 6: Final answer
    x = 17,197.25

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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.