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Finding the Fourth Proportional to 12,509.44, 18,751.04 and 5,111.04

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Solution

The fourth proportional to 12,509.44, 18,751.04 and 5,111.04 is: 7,661.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,509.44 : 18,751.04 = 5,111.04 : x
  2. Step 2: Convert to fraction form
    12,509.44/18,751.04 = 5,111.04/x
  3. Step 3: Cross multiply
    12,509.44x = 18,751.04 × 5,111.04
  4. Step 4: Simplify right side
    12,509.44x = 95,837,315.48
  5. Step 5: Solve for x
    x = 95,837,315.48/12,509.44
  6. Step 6: Final answer
    x = 7,661.20

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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.