Home / 12,487.36-18,728.88-4,694.80

Finding the Fourth Proportional to 12,487.36, 18,728.88 and 4,694.80

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Solution

The fourth proportional to 12,487.36, 18,728.88 and 4,694.80 is: 7,041.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,487.36 : 18,728.88 = 4,694.80 : x
  2. Step 2: Convert to fraction form
    12,487.36/18,728.88 = 4,694.80/x
  3. Step 3: Cross multiply
    12,487.36x = 18,728.88 × 4,694.80
  4. Step 4: Simplify right side
    12,487.36x = 87,928,345.82
  5. Step 5: Solve for x
    x = 87,928,345.82/12,487.36
  6. Step 6: Final answer
    x = 7,041.39

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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.