Home / 28,534.98-39,379.43-15,787.95

Finding the Fourth Proportional to 28,534.98, 39,379.43 and 15,787.95

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Solution

The fourth proportional to 28,534.98, 39,379.43 and 15,787.95 is: 21,788.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,534.98 : 39,379.43 = 15,787.95 : x
  2. Step 2: Convert to fraction form
    28,534.98/39,379.43 = 15,787.95/x
  3. Step 3: Cross multiply
    28,534.98x = 39,379.43 × 15,787.95
  4. Step 4: Simplify right side
    28,534.98x = 621,720,651.53
  5. Step 5: Solve for x
    x = 621,720,651.53/28,534.98
  6. Step 6: Final answer
    x = 21,788.02

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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.