Home / 15,361.95-21,199.32-8,902.47

Finding the Fourth Proportional to 15,361.95, 21,199.32 and 8,902.47

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Solution

The fourth proportional to 15,361.95, 21,199.32 and 8,902.47 is: 12,285.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,361.95 : 21,199.32 = 8,902.47 : x
  2. Step 2: Convert to fraction form
    15,361.95/21,199.32 = 8,902.47/x
  3. Step 3: Cross multiply
    15,361.95x = 21,199.32 × 8,902.47
  4. Step 4: Simplify right side
    15,361.95x = 188,726,310.32
  5. Step 5: Solve for x
    x = 188,726,310.32/15,361.95
  6. Step 6: Final answer
    x = 12,285.31

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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.