Home / 28,521.45-39,361.55-15,943.77

Finding the Fourth Proportional to 28,521.45, 39,361.55 and 15,943.77

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Solution

The fourth proportional to 28,521.45, 39,361.55 and 15,943.77 is: 22,003.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,521.45 : 39,361.55 = 15,943.77 : x
  2. Step 2: Convert to fraction form
    28,521.45/39,361.55 = 15,943.77/x
  3. Step 3: Cross multiply
    28,521.45x = 39,361.55 × 15,943.77
  4. Step 4: Simplify right side
    28,521.45x = 627,571,420.32
  5. Step 5: Solve for x
    x = 627,571,420.32/28,521.45
  6. Step 6: Final answer
    x = 22,003.49

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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.