Home / 25,308.12-34,971.58-21,940.14

Finding the Fourth Proportional to 25,308.12, 34,971.58 and 21,940.14

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Solution

The fourth proportional to 25,308.12, 34,971.58 and 21,940.14 is: 30,317.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,308.12 : 34,971.58 = 21,940.14 : x
  2. Step 2: Convert to fraction form
    25,308.12/34,971.58 = 21,940.14/x
  3. Step 3: Cross multiply
    25,308.12x = 34,971.58 × 21,940.14
  4. Step 4: Simplify right side
    25,308.12x = 767,281,361.22
  5. Step 5: Solve for x
    x = 767,281,361.22/25,308.12
  6. Step 6: Final answer
    x = 30,317.60

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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.