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Finding the Fourth Proportional to 18,886.19, 28,329.93 and 5,738.54

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Solution

The fourth proportional to 18,886.19, 28,329.93 and 5,738.54 is: 8,608.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,886.19 : 28,329.93 = 5,738.54 : x
  2. Step 2: Convert to fraction form
    18,886.19/28,329.93 = 5,738.54/x
  3. Step 3: Cross multiply
    18,886.19x = 28,329.93 × 5,738.54
  4. Step 4: Simplify right side
    18,886.19x = 162,572,436.50
  5. Step 5: Solve for x
    x = 162,572,436.50/18,886.19
  6. Step 6: Final answer
    x = 8,608.01

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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.