Home / 25,317.45-34,938.95-15,891.21

Finding the Fourth Proportional to 25,317.45, 34,938.95 and 15,891.21

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Solution

The fourth proportional to 25,317.45, 34,938.95 and 15,891.21 is: 21,930.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,317.45 : 34,938.95 = 15,891.21 : x
  2. Step 2: Convert to fraction form
    25,317.45/34,938.95 = 15,891.21/x
  3. Step 3: Cross multiply
    25,317.45x = 34,938.95 × 15,891.21
  4. Step 4: Simplify right side
    25,317.45x = 555,222,112.17
  5. Step 5: Solve for x
    x = 555,222,112.17/25,317.45
  6. Step 6: Final answer
    x = 21,930.41

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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.