Home / 14,591.98-20,120.37-12,686.86

Finding the Fourth Proportional to 14,591.98, 20,120.37 and 12,686.86

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Solution

The fourth proportional to 14,591.98, 20,120.37 and 12,686.86 is: 17,493.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,591.98 : 20,120.37 = 12,686.86 : x
  2. Step 2: Convert to fraction form
    14,591.98/20,120.37 = 12,686.86/x
  3. Step 3: Cross multiply
    14,591.98x = 20,120.37 × 12,686.86
  4. Step 4: Simplify right side
    14,591.98x = 255,264,317.34
  5. Step 5: Solve for x
    x = 255,264,317.34/14,591.98
  6. Step 6: Final answer
    x = 17,493.47

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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.