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Finding the Fourth Proportional to 28,477.16, 42,708.38 and 8,751.08

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Solution

The fourth proportional to 28,477.16, 42,708.38 and 8,751.08 is: 13,124.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,477.16 : 42,708.38 = 8,751.08 : x
  2. Step 2: Convert to fraction form
    28,477.16/42,708.38 = 8,751.08/x
  3. Step 3: Cross multiply
    28,477.16x = 42,708.38 × 8,751.08
  4. Step 4: Simplify right side
    28,477.16x = 373,744,450.05
  5. Step 5: Solve for x
    x = 373,744,450.05/28,477.16
  6. Step 6: Final answer
    x = 13,124.36

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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.