Home / 20,410.40-30,615.72-7,263.28

Finding the Fourth Proportional to 20,410.40, 30,615.72 and 7,263.28

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Solution

The fourth proportional to 20,410.40, 30,615.72 and 7,263.28 is: 10,894.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,410.40 : 30,615.72 = 7,263.28 : x
  2. Step 2: Convert to fraction form
    20,410.40/30,615.72 = 7,263.28/x
  3. Step 3: Cross multiply
    20,410.40x = 30,615.72 × 7,263.28
  4. Step 4: Simplify right side
    20,410.40x = 222,370,546.76
  5. Step 5: Solve for x
    x = 222,370,546.76/20,410.40
  6. Step 6: Final answer
    x = 10,894.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.