Home / 30,625.84-42,290.58-19,315.54

Finding the Fourth Proportional to 30,625.84, 42,290.58 and 19,315.54

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Solution

The fourth proportional to 30,625.84, 42,290.58 and 19,315.54 is: 26,672.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,625.84 : 42,290.58 = 19,315.54 : x
  2. Step 2: Convert to fraction form
    30,625.84/42,290.58 = 19,315.54/x
  3. Step 3: Cross multiply
    30,625.84x = 42,290.58 × 19,315.54
  4. Step 4: Simplify right side
    30,625.84x = 816,865,389.61
  5. Step 5: Solve for x
    x = 816,865,389.61/30,625.84
  6. Step 6: Final answer
    x = 26,672.42

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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.