Home / 17,339.80-25,985.40-12,139.60

Finding the Fourth Proportional to 17,339.80, 25,985.40 and 12,139.60

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Solution

The fourth proportional to 17,339.80, 25,985.40 and 12,139.60 is: 18,192.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,339.80 : 25,985.40 = 12,139.60 : x
  2. Step 2: Convert to fraction form
    17,339.80/25,985.40 = 12,139.60/x
  3. Step 3: Cross multiply
    17,339.80x = 25,985.40 × 12,139.60
  4. Step 4: Simplify right side
    17,339.80x = 315,452,361.84
  5. Step 5: Solve for x
    x = 315,452,361.84/17,339.80
  6. Step 6: Final answer
    x = 18,192.39

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1.5x scale

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.