Home / 20,862.64-28,790.47-11,302.64

Finding the Fourth Proportional to 20,862.64, 28,790.47 and 11,302.64

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Solution

The fourth proportional to 20,862.64, 28,790.47 and 11,302.64 is: 15,597.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,862.64 : 28,790.47 = 11,302.64 : x
  2. Step 2: Convert to fraction form
    20,862.64/28,790.47 = 11,302.64/x
  3. Step 3: Cross multiply
    20,862.64x = 28,790.47 × 11,302.64
  4. Step 4: Simplify right side
    20,862.64x = 325,408,317.84
  5. Step 5: Solve for x
    x = 325,408,317.84/20,862.64
  6. Step 6: Final answer
    x = 15,597.66

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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.