Home / 25,429.98-35,085.20-15,361.40

Finding the Fourth Proportional to 25,429.98, 35,085.20 and 15,361.40

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Solution

The fourth proportional to 25,429.98, 35,085.20 and 15,361.40 is: 21,193.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,429.98 : 35,085.20 = 15,361.40 : x
  2. Step 2: Convert to fraction form
    25,429.98/35,085.20 = 15,361.40/x
  3. Step 3: Cross multiply
    25,429.98x = 35,085.20 × 15,361.40
  4. Step 4: Simplify right side
    25,429.98x = 538,957,791.28
  5. Step 5: Solve for x
    x = 538,957,791.28/25,429.98
  6. Step 6: Final answer
    x = 21,193.80

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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.