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Finding the Fourth Proportional to 12,509.92, 18,762.72 and 4,718.08

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Solution

The fourth proportional to 12,509.92, 18,762.72 and 4,718.08 is: 7,076.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,509.92 : 18,762.72 = 4,718.08 : x
  2. Step 2: Convert to fraction form
    12,509.92/18,762.72 = 4,718.08/x
  3. Step 3: Cross multiply
    12,509.92x = 18,762.72 × 4,718.08
  4. Step 4: Simplify right side
    12,509.92x = 88,524,013.98
  5. Step 5: Solve for x
    x = 88,524,013.98/12,509.92
  6. Step 6: Final answer
    x = 7,076.31

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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.