Home / 20,827.86-28,741.02-11,875.74

Finding the Fourth Proportional to 20,827.86, 28,741.02 and 11,875.74

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Solution

The fourth proportional to 20,827.86, 28,741.02 and 11,875.74 is: 16,387.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,827.86 : 28,741.02 = 11,875.74 : x
  2. Step 2: Convert to fraction form
    20,827.86/28,741.02 = 11,875.74/x
  3. Step 3: Cross multiply
    20,827.86x = 28,741.02 × 11,875.74
  4. Step 4: Simplify right side
    20,827.86x = 341,320,880.85
  5. Step 5: Solve for x
    x = 341,320,880.85/20,827.86
  6. Step 6: Final answer
    x = 16,387.71

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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.