Home / 13,945.04-19,239.42-7,972.48

Finding the Fourth Proportional to 13,945.04, 19,239.42 and 7,972.48

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Solution

The fourth proportional to 13,945.04, 19,239.42 and 7,972.48 is: 10,999.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,945.04 : 19,239.42 = 7,972.48 : x
  2. Step 2: Convert to fraction form
    13,945.04/19,239.42 = 7,972.48/x
  3. Step 3: Cross multiply
    13,945.04x = 19,239.42 × 7,972.48
  4. Step 4: Simplify right side
    13,945.04x = 153,385,891.16
  5. Step 5: Solve for x
    x = 153,385,891.16/13,945.04
  6. Step 6: Final answer
    x = 10,999.32

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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.