Home / 18,868.22-28,302.03-4,828.12

Finding the Fourth Proportional to 18,868.22, 28,302.03 and 4,828.12

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Solution

The fourth proportional to 18,868.22, 28,302.03 and 4,828.12 is: 7,242.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,868.22 : 28,302.03 = 4,828.12 : x
  2. Step 2: Convert to fraction form
    18,868.22/28,302.03 = 4,828.12/x
  3. Step 3: Cross multiply
    18,868.22x = 28,302.03 × 4,828.12
  4. Step 4: Simplify right side
    18,868.22x = 136,645,597.08
  5. Step 5: Solve for x
    x = 136,645,597.08/18,868.22
  6. Step 6: Final answer
    x = 7,242.10

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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.