Home / 21,745.06-29,987.52-14,188.97

Finding the Fourth Proportional to 21,745.06, 29,987.52 and 14,188.97

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Solution

The fourth proportional to 21,745.06, 29,987.52 and 14,188.97 is: 19,567.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,745.06 : 29,987.52 = 14,188.97 : x
  2. Step 2: Convert to fraction form
    21,745.06/29,987.52 = 14,188.97/x
  3. Step 3: Cross multiply
    21,745.06x = 29,987.52 × 14,188.97
  4. Step 4: Simplify right side
    21,745.06x = 425,492,043.41
  5. Step 5: Solve for x
    x = 425,492,043.41/21,745.06
  6. Step 6: Final answer
    x = 19,567.30

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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.