Home / 15,003.25-20,705.69-8,289.47

Finding the Fourth Proportional to 15,003.25, 20,705.69 and 8,289.47

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Solution

The fourth proportional to 15,003.25, 20,705.69 and 8,289.47 is: 11,440.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,003.25 : 20,705.69 = 8,289.47 : x
  2. Step 2: Convert to fraction form
    15,003.25/20,705.69 = 8,289.47/x
  3. Step 3: Cross multiply
    15,003.25x = 20,705.69 × 8,289.47
  4. Step 4: Simplify right side
    15,003.25x = 171,639,268.57
  5. Step 5: Solve for x
    x = 171,639,268.57/15,003.25
  6. Step 6: Final answer
    x = 11,440.14

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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.