Home / 19,116.80-28,676.97-7,430.90

Finding the Fourth Proportional to 19,116.80, 28,676.97 and 7,430.90

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Solution

The fourth proportional to 19,116.80, 28,676.97 and 7,430.90 is: 11,147.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,116.80 : 28,676.97 = 7,430.90 : x
  2. Step 2: Convert to fraction form
    19,116.80/28,676.97 = 7,430.90/x
  3. Step 3: Cross multiply
    19,116.80x = 28,676.97 × 7,430.90
  4. Step 4: Simplify right side
    19,116.80x = 213,095,696.37
  5. Step 5: Solve for x
    x = 213,095,696.37/19,116.80
  6. Step 6: Final answer
    x = 11,147.04

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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.