Home / 13,943.76-19,239.52-7,977.43

Finding the Fourth Proportional to 13,943.76, 19,239.52 and 7,977.43

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Solution

The fourth proportional to 13,943.76, 19,239.52 and 7,977.43 is: 11,007.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,943.76 : 19,239.52 = 7,977.43 : x
  2. Step 2: Convert to fraction form
    13,943.76/19,239.52 = 7,977.43/x
  3. Step 3: Cross multiply
    13,943.76x = 19,239.52 × 7,977.43
  4. Step 4: Simplify right side
    13,943.76x = 153,481,924.03
  5. Step 5: Solve for x
    x = 153,481,924.03/13,943.76
  6. Step 6: Final answer
    x = 11,007.21

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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.