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Finding the Fourth Proportional to 20,701, 28,574.58 and 12,317.32

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Solution

The fourth proportional to 20,701, 28,574.58 and 12,317.32 is: 17,002.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,701 : 28,574.58 = 12,317.32 : x
  2. Step 2: Convert to fraction form
    20,701/28,574.58 = 12,317.32/x
  3. Step 3: Cross multiply
    20,701x = 28,574.58 × 12,317.32
  4. Step 4: Simplify right side
    20,701x = 351,962,245.73
  5. Step 5: Solve for x
    x = 351,962,245.73/20,701
  6. Step 6: Final answer
    x = 17,002.19

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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.