Home / 13,949.17-19,249.47-7,980.45

Finding the Fourth Proportional to 13,949.17, 19,249.47 and 7,980.45

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Solution

The fourth proportional to 13,949.17, 19,249.47 and 7,980.45 is: 11,012.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,949.17 : 19,249.47 = 7,980.45 : x
  2. Step 2: Convert to fraction form
    13,949.17/19,249.47 = 7,980.45/x
  3. Step 3: Cross multiply
    13,949.17x = 19,249.47 × 7,980.45
  4. Step 4: Simplify right side
    13,949.17x = 153,619,498.17
  5. Step 5: Solve for x
    x = 153,619,498.17/13,949.17
  6. Step 6: Final answer
    x = 11,012.81

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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.