Home / 30,627.90-42,265.59-18,686.94

Finding the Fourth Proportional to 30,627.90, 42,265.59 and 18,686.94

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Solution

The fourth proportional to 30,627.90, 42,265.59 and 18,686.94 is: 25,787.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,627.90 : 42,265.59 = 18,686.94 : x
  2. Step 2: Convert to fraction form
    30,627.90/42,265.59 = 18,686.94/x
  3. Step 3: Cross multiply
    30,627.90x = 42,265.59 × 18,686.94
  4. Step 4: Simplify right side
    30,627.90x = 789,814,544.39
  5. Step 5: Solve for x
    x = 789,814,544.39/30,627.90
  6. Step 6: Final answer
    x = 25,787.42

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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.