Home / 20,581.95-28,407.51-11,629.83

Finding the Fourth Proportional to 20,581.95, 28,407.51 and 11,629.83

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Solution

The fourth proportional to 20,581.95, 28,407.51 and 11,629.83 is: 16,051.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,581.95 : 28,407.51 = 11,629.83 : x
  2. Step 2: Convert to fraction form
    20,581.95/28,407.51 = 11,629.83/x
  3. Step 3: Cross multiply
    20,581.95x = 28,407.51 × 11,629.83
  4. Step 4: Simplify right side
    20,581.95x = 330,374,512.02
  5. Step 5: Solve for x
    x = 330,374,512.02/20,581.95
  6. Step 6: Final answer
    x = 16,051.66

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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.