Home / 12,990.30-19,473.76-4,668.36

Finding the Fourth Proportional to 12,990.30, 19,473.76 and 4,668.36

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Solution

The fourth proportional to 12,990.30, 19,473.76 and 4,668.36 is: 6,998.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,990.30 : 19,473.76 = 4,668.36 : x
  2. Step 2: Convert to fraction form
    12,990.30/19,473.76 = 4,668.36/x
  3. Step 3: Cross multiply
    12,990.30x = 19,473.76 × 4,668.36
  4. Step 4: Simplify right side
    12,990.30x = 90,910,522.23
  5. Step 5: Solve for x
    x = 90,910,522.23/12,990.30
  6. Step 6: Final answer
    x = 6,998.34

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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.