Home / 20,830.42-28,716.07-14,851.71

Finding the Fourth Proportional to 20,830.42, 28,716.07 and 14,851.71

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Solution

The fourth proportional to 20,830.42, 28,716.07 and 14,851.71 is: 20,474.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,830.42 : 28,716.07 = 14,851.71 : x
  2. Step 2: Convert to fraction form
    20,830.42/28,716.07 = 14,851.71/x
  3. Step 3: Cross multiply
    20,830.42x = 28,716.07 × 14,851.71
  4. Step 4: Simplify right side
    20,830.42x = 426,482,743.98
  5. Step 5: Solve for x
    x = 426,482,743.98/20,830.42
  6. Step 6: Final answer
    x = 20,474.03

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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.