Home / 28,028.64-42,070.32-21,855.84

Finding the Fourth Proportional to 28,028.64, 42,070.32 and 21,855.84

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Solution

The fourth proportional to 28,028.64, 42,070.32 and 21,855.84 is: 32,805.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,028.64 : 42,070.32 = 21,855.84 : x
  2. Step 2: Convert to fraction form
    28,028.64/42,070.32 = 21,855.84/x
  3. Step 3: Cross multiply
    28,028.64x = 42,070.32 × 21,855.84
  4. Step 4: Simplify right side
    28,028.64x = 919,482,182.67
  5. Step 5: Solve for x
    x = 919,482,182.67/28,028.64
  6. Step 6: Final answer
    x = 32,805.09

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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.