Home / 13,980.20-19,290.48-8,010.72

Finding the Fourth Proportional to 13,980.20, 19,290.48 and 8,010.72

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Solution

The fourth proportional to 13,980.20, 19,290.48 and 8,010.72 is: 11,053.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,980.20 : 19,290.48 = 8,010.72 : x
  2. Step 2: Convert to fraction form
    13,980.20/19,290.48 = 8,010.72/x
  3. Step 3: Cross multiply
    13,980.20x = 19,290.48 × 8,010.72
  4. Step 4: Simplify right side
    13,980.20x = 154,530,633.95
  5. Step 5: Solve for x
    x = 154,530,633.95/13,980.20
  6. Step 6: Final answer
    x = 11,053.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.