Home / 25,319.88-34,940.70-13,989.60

Finding the Fourth Proportional to 25,319.88, 34,940.70 and 13,989.60

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Solution

The fourth proportional to 25,319.88, 34,940.70 and 13,989.60 is: 19,305.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,319.88 : 34,940.70 = 13,989.60 : x
  2. Step 2: Convert to fraction form
    25,319.88/34,940.70 = 13,989.60/x
  3. Step 3: Cross multiply
    25,319.88x = 34,940.70 × 13,989.60
  4. Step 4: Simplify right side
    25,319.88x = 488,806,416.72
  5. Step 5: Solve for x
    x = 488,806,416.72/25,319.88
  6. Step 6: Final answer
    x = 19,305.24

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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.