Home / 18,719.29-28,078.86-4,868.25

Finding the Fourth Proportional to 18,719.29, 28,078.86 and 4,868.25

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Solution

The fourth proportional to 18,719.29, 28,078.86 and 4,868.25 is: 7,302.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,719.29 : 28,078.86 = 4,868.25 : x
  2. Step 2: Convert to fraction form
    18,719.29/28,078.86 = 4,868.25/x
  3. Step 3: Cross multiply
    18,719.29x = 28,078.86 × 4,868.25
  4. Step 4: Simplify right side
    18,719.29x = 136,694,885.85
  5. Step 5: Solve for x
    x = 136,694,885.85/18,719.29
  6. Step 6: Final answer
    x = 7,302.35

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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.