Home / 25,163.84-34,720.80-13,985.60

Finding the Fourth Proportional to 25,163.84, 34,720.80 and 13,985.60

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Solution

The fourth proportional to 25,163.84, 34,720.80 and 13,985.60 is: 19,297.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,163.84 : 34,720.80 = 13,985.60 : x
  2. Step 2: Convert to fraction form
    25,163.84/34,720.80 = 13,985.60/x
  3. Step 3: Cross multiply
    25,163.84x = 34,720.80 × 13,985.60
  4. Step 4: Simplify right side
    25,163.84x = 485,591,220.48
  5. Step 5: Solve for x
    x = 485,591,220.48/25,163.84
  6. Step 6: Final answer
    x = 19,297.18

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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.