Home / 15,004.96-20,705.82-8,290.60

Finding the Fourth Proportional to 15,004.96, 20,705.82 and 8,290.60

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Solution

The fourth proportional to 15,004.96, 20,705.82 and 8,290.60 is: 11,440.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,004.96 : 20,705.82 = 8,290.60 : x
  2. Step 2: Convert to fraction form
    15,004.96/20,705.82 = 8,290.60/x
  3. Step 3: Cross multiply
    15,004.96x = 20,705.82 × 8,290.60
  4. Step 4: Simplify right side
    15,004.96x = 171,663,671.29
  5. Step 5: Solve for x
    x = 171,663,671.29/15,004.96
  6. Step 6: Final answer
    x = 11,440.46

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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.