Home / 20,655.36-30,987.44-5,868.80

Finding the Fourth Proportional to 20,655.36, 30,987.44 and 5,868.80

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Solution

The fourth proportional to 20,655.36, 30,987.44 and 5,868.80 is: 8,804.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,655.36 : 30,987.44 = 5,868.80 : x
  2. Step 2: Convert to fraction form
    20,655.36/30,987.44 = 5,868.80/x
  3. Step 3: Cross multiply
    20,655.36x = 30,987.44 × 5,868.80
  4. Step 4: Simplify right side
    20,655.36x = 181,859,087.87
  5. Step 5: Solve for x
    x = 181,859,087.87/20,655.36
  6. Step 6: Final answer
    x = 8,804.45

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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.