Home / 12,990.29-19,487.22-4,668.75

Finding the Fourth Proportional to 12,990.29, 19,487.22 and 4,668.75

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Solution

The fourth proportional to 12,990.29, 19,487.22 and 4,668.75 is: 7,003.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,990.29 : 19,487.22 = 4,668.75 : x
  2. Step 2: Convert to fraction form
    12,990.29/19,487.22 = 4,668.75/x
  3. Step 3: Cross multiply
    12,990.29x = 19,487.22 × 4,668.75
  4. Step 4: Simplify right side
    12,990.29x = 90,980,940.87
  5. Step 5: Solve for x
    x = 90,980,940.87/12,990.29
  6. Step 6: Final answer
    x = 7,003.77

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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.