Home / 15,004.25-20,707.07-8,290.47

Finding the Fourth Proportional to 15,004.25, 20,707.07 and 8,290.47

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Solution

The fourth proportional to 15,004.25, 20,707.07 and 8,290.47 is: 11,441.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,004.25 : 20,707.07 = 8,290.47 : x
  2. Step 2: Convert to fraction form
    15,004.25/20,707.07 = 8,290.47/x
  3. Step 3: Cross multiply
    15,004.25x = 20,707.07 × 8,290.47
  4. Step 4: Simplify right side
    15,004.25x = 171,671,342.62
  5. Step 5: Solve for x
    x = 171,671,342.62/15,004.25
  6. Step 6: Final answer
    x = 11,441.51

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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.