Home / 13,865.10-20,777.75-5,965.47

Finding the Fourth Proportional to 13,865.10, 20,777.75 and 5,965.47

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Solution

The fourth proportional to 13,865.10, 20,777.75 and 5,965.47 is: 8,939.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,865.10 : 20,777.75 = 5,965.47 : x
  2. Step 2: Convert to fraction form
    13,865.10/20,777.75 = 5,965.47/x
  3. Step 3: Cross multiply
    13,865.10x = 20,777.75 × 5,965.47
  4. Step 4: Simplify right side
    13,865.10x = 123,949,036.84
  5. Step 5: Solve for x
    x = 123,949,036.84/13,865.10
  6. Step 6: Final answer
    x = 8,939.64

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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.