Home / 18,852.07-28,278.07-4,812.09

Finding the Fourth Proportional to 18,852.07, 28,278.07 and 4,812.09

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Solution

The fourth proportional to 18,852.07, 28,278.07 and 4,812.09 is: 7,218.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,852.07 : 28,278.07 = 4,812.09 : x
  2. Step 2: Convert to fraction form
    18,852.07/28,278.07 = 4,812.09/x
  3. Step 3: Cross multiply
    18,852.07x = 28,278.07 × 4,812.09
  4. Step 4: Simplify right side
    18,852.07x = 136,076,735.94
  5. Step 5: Solve for x
    x = 136,076,735.94/18,852.07
  6. Step 6: Final answer
    x = 7,218.13

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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.