Home / 25,319.10-34,940.16-13,989.36

Finding the Fourth Proportional to 25,319.10, 34,940.16 and 13,989.36

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Solution

The fourth proportional to 25,319.10, 34,940.16 and 13,989.36 is: 19,305.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,319.10 : 34,940.16 = 13,989.36 : x
  2. Step 2: Convert to fraction form
    25,319.10/34,940.16 = 13,989.36/x
  3. Step 3: Cross multiply
    25,319.10x = 34,940.16 × 13,989.36
  4. Step 4: Simplify right side
    25,319.10x = 488,790,476.70
  5. Step 5: Solve for x
    x = 488,790,476.70/25,319.10
  6. Step 6: Final answer
    x = 19,305.21

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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.