Home / 15,153.90-20,902.62-9,783.18

Finding the Fourth Proportional to 15,153.90, 20,902.62 and 9,783.18

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Solution

The fourth proportional to 15,153.90, 20,902.62 and 9,783.18 is: 13,494.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,153.90 : 20,902.62 = 9,783.18 : x
  2. Step 2: Convert to fraction form
    15,153.90/20,902.62 = 9,783.18/x
  3. Step 3: Cross multiply
    15,153.90x = 20,902.62 × 9,783.18
  4. Step 4: Simplify right side
    15,153.90x = 204,494,093.93
  5. Step 5: Solve for x
    x = 204,494,093.93/15,153.90
  6. Step 6: Final answer
    x = 13,494.49

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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.