Home / 13,749.09-18,973.59-7,699.39

Finding the Fourth Proportional to 13,749.09, 18,973.59 and 7,699.39

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Solution

The fourth proportional to 13,749.09, 18,973.59 and 7,699.39 is: 10,625.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,749.09 : 18,973.59 = 7,699.39 : x
  2. Step 2: Convert to fraction form
    13,749.09/18,973.59 = 7,699.39/x
  3. Step 3: Cross multiply
    13,749.09x = 18,973.59 × 7,699.39
  4. Step 4: Simplify right side
    13,749.09x = 146,084,993.49
  5. Step 5: Solve for x
    x = 146,084,993.49/13,749.09
  6. Step 6: Final answer
    x = 10,625.07

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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.