Home / 11,169.17-15,391.23-7,973.45

Finding the Fourth Proportional to 11,169.17, 15,391.23 and 7,973.45

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Solution

The fourth proportional to 11,169.17, 15,391.23 and 7,973.45 is: 10,987.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,169.17 : 15,391.23 = 7,973.45 : x
  2. Step 2: Convert to fraction form
    11,169.17/15,391.23 = 7,973.45/x
  3. Step 3: Cross multiply
    11,169.17x = 15,391.23 × 7,973.45
  4. Step 4: Simplify right side
    11,169.17x = 122,721,125.89
  5. Step 5: Solve for x
    x = 122,721,125.89/11,169.17
  6. Step 6: Final answer
    x = 10,987.49

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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.