Home / 21,468.51-29,611.58-20,745.99

Finding the Fourth Proportional to 21,468.51, 29,611.58 and 20,745.99

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Solution

The fourth proportional to 21,468.51, 29,611.58 and 20,745.99 is: 28,615.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,468.51 : 29,611.58 = 20,745.99 : x
  2. Step 2: Convert to fraction form
    21,468.51/29,611.58 = 20,745.99/x
  3. Step 3: Cross multiply
    21,468.51x = 29,611.58 × 20,745.99
  4. Step 4: Simplify right side
    21,468.51x = 614,321,438.83
  5. Step 5: Solve for x
    x = 614,321,438.83/21,468.51
  6. Step 6: Final answer
    x = 28,615.00

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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.