Home / 11,161.09-15,386.56-7,973.54

Finding the Fourth Proportional to 11,161.09, 15,386.56 and 7,973.54

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Solution

The fourth proportional to 11,161.09, 15,386.56 and 7,973.54 is: 10,992.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,161.09 : 15,386.56 = 7,973.54 : x
  2. Step 2: Convert to fraction form
    11,161.09/15,386.56 = 7,973.54/x
  3. Step 3: Cross multiply
    11,161.09x = 15,386.56 × 7,973.54
  4. Step 4: Simplify right side
    11,161.09x = 122,685,312.46
  5. Step 5: Solve for x
    x = 122,685,312.46/11,161.09
  6. Step 6: Final answer
    x = 10,992.23

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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.