Home / 13,991.16-19,303.47-7,940.43

Finding the Fourth Proportional to 13,991.16, 19,303.47 and 7,940.43

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Solution

The fourth proportional to 13,991.16, 19,303.47 and 7,940.43 is: 10,955.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,991.16 : 19,303.47 = 7,940.43 : x
  2. Step 2: Convert to fraction form
    13,991.16/19,303.47 = 7,940.43/x
  3. Step 3: Cross multiply
    13,991.16x = 19,303.47 × 7,940.43
  4. Step 4: Simplify right side
    13,991.16x = 153,277,852.29
  5. Step 5: Solve for x
    x = 153,277,852.29/13,991.16
  6. Step 6: Final answer
    x = 10,955.34

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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.