Home / 28,438.08-39,241.44-20,040

Finding the Fourth Proportional to 28,438.08, 39,241.44 and 20,040

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Solution

The fourth proportional to 28,438.08, 39,241.44 and 20,040 is: 27,653.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,438.08 : 39,241.44 = 20,040 : x
  2. Step 2: Convert to fraction form
    28,438.08/39,241.44 = 20,040/x
  3. Step 3: Cross multiply
    28,438.08x = 39,241.44 × 20,040
  4. Step 4: Simplify right side
    28,438.08x = 786,398,457.60
  5. Step 5: Solve for x
    x = 786,398,457.60/28,438.08
  6. Step 6: Final answer
    x = 27,653.01

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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.