Home / 20,404.56-28,117.86-14,729.70

Finding the Fourth Proportional to 20,404.56, 28,117.86 and 14,729.70

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Solution

The fourth proportional to 20,404.56, 28,117.86 and 14,729.70 is: 20,297.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,404.56 : 28,117.86 = 14,729.70 : x
  2. Step 2: Convert to fraction form
    20,404.56/28,117.86 = 14,729.70/x
  3. Step 3: Cross multiply
    20,404.56x = 28,117.86 × 14,729.70
  4. Step 4: Simplify right side
    20,404.56x = 414,167,642.44
  5. Step 5: Solve for x
    x = 414,167,642.44/20,404.56
  6. Step 6: Final answer
    x = 20,297.80

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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.