Home / 15,004.35-20,705.63-8,290.62

Finding the Fourth Proportional to 15,004.35, 20,705.63 and 8,290.62

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Solution

The fourth proportional to 15,004.35, 20,705.63 and 8,290.62 is: 11,440.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,004.35 : 20,705.63 = 8,290.62 : x
  2. Step 2: Convert to fraction form
    15,004.35/20,705.63 = 8,290.62/x
  3. Step 3: Cross multiply
    15,004.35x = 20,705.63 × 8,290.62
  4. Step 4: Simplify right side
    15,004.35x = 171,662,406.66
  5. Step 5: Solve for x
    x = 171,662,406.66/15,004.35
  6. Step 6: Final answer
    x = 11,440.85

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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.