Home / 15,769.60-21,764.64-9,485.44

Finding the Fourth Proportional to 15,769.60, 21,764.64 and 9,485.44

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Solution

The fourth proportional to 15,769.60, 21,764.64 and 9,485.44 is: 13,091.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,769.60 : 21,764.64 = 9,485.44 : x
  2. Step 2: Convert to fraction form
    15,769.60/21,764.64 = 9,485.44/x
  3. Step 3: Cross multiply
    15,769.60x = 21,764.64 × 9,485.44
  4. Step 4: Simplify right side
    15,769.60x = 206,447,186.84
  5. Step 5: Solve for x
    x = 206,447,186.84/15,769.60
  6. Step 6: Final answer
    x = 13,091.47

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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.