Home / 21,525.25-29,695.25-12,568.80

Finding the Fourth Proportional to 21,525.25, 29,695.25 and 12,568.80

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Solution

The fourth proportional to 21,525.25, 29,695.25 and 12,568.80 is: 17,339.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,525.25 : 29,695.25 = 12,568.80 : x
  2. Step 2: Convert to fraction form
    21,525.25/29,695.25 = 12,568.80/x
  3. Step 3: Cross multiply
    21,525.25x = 29,695.25 × 12,568.80
  4. Step 4: Simplify right side
    21,525.25x = 373,233,730.28
  5. Step 5: Solve for x
    x = 373,233,730.28/21,525.25
  6. Step 6: Final answer
    x = 17,339.35

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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.