Home / 20,128.16-30,186.84-6,084.56

Finding the Fourth Proportional to 20,128.16, 30,186.84 and 6,084.56

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Solution

The fourth proportional to 20,128.16, 30,186.84 and 6,084.56 is: 9,125.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,128.16 : 30,186.84 = 6,084.56 : x
  2. Step 2: Convert to fraction form
    20,128.16/30,186.84 = 6,084.56/x
  3. Step 3: Cross multiply
    20,128.16x = 30,186.84 × 6,084.56
  4. Step 4: Simplify right side
    20,128.16x = 183,673,639.19
  5. Step 5: Solve for x
    x = 183,673,639.19/20,128.16
  6. Step 6: Final answer
    x = 9,125.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.