Home / 28,620.14-42,942.56-13,840.20

Finding the Fourth Proportional to 28,620.14, 42,942.56 and 13,840.20

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Solution

The fourth proportional to 28,620.14, 42,942.56 and 13,840.20 is: 20,766.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,620.14 : 42,942.56 = 13,840.20 : x
  2. Step 2: Convert to fraction form
    28,620.14/42,942.56 = 13,840.20/x
  3. Step 3: Cross multiply
    28,620.14x = 42,942.56 × 13,840.20
  4. Step 4: Simplify right side
    28,620.14x = 594,333,549.71
  5. Step 5: Solve for x
    x = 594,333,549.71/28,620.14
  6. Step 6: Final answer
    x = 20,766.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.