Home / 20,160.36-30,232.80-7,009.20

Finding the Fourth Proportional to 20,160.36, 30,232.80 and 7,009.20

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Solution

The fourth proportional to 20,160.36, 30,232.80 and 7,009.20 is: 10,511.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,160.36 : 30,232.80 = 7,009.20 : x
  2. Step 2: Convert to fraction form
    20,160.36/30,232.80 = 7,009.20/x
  3. Step 3: Cross multiply
    20,160.36x = 30,232.80 × 7,009.20
  4. Step 4: Simplify right side
    20,160.36x = 211,907,741.76
  5. Step 5: Solve for x
    x = 211,907,741.76/20,160.36
  6. Step 6: Final answer
    x = 10,511.11

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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.