Home / 15,205.05-20,970.92-9,236.60

Finding the Fourth Proportional to 15,205.05, 20,970.92 and 9,236.60

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Solution

The fourth proportional to 15,205.05, 20,970.92 and 9,236.60 is: 12,739.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,205.05 : 20,970.92 = 9,236.60 : x
  2. Step 2: Convert to fraction form
    15,205.05/20,970.92 = 9,236.60/x
  3. Step 3: Cross multiply
    15,205.05x = 20,970.92 × 9,236.60
  4. Step 4: Simplify right side
    15,205.05x = 193,699,848.63
  5. Step 5: Solve for x
    x = 193,699,848.63/15,205.05
  6. Step 6: Final answer
    x = 12,739.18

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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.