Home / 20,958.84-28,888.38-17,978.04

Finding the Fourth Proportional to 20,958.84, 28,888.38 and 17,978.04

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Solution

The fourth proportional to 20,958.84, 28,888.38 and 17,978.04 is: 24,779.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,958.84 : 28,888.38 = 17,978.04 : x
  2. Step 2: Convert to fraction form
    20,958.84/28,888.38 = 17,978.04/x
  3. Step 3: Cross multiply
    20,958.84x = 28,888.38 × 17,978.04
  4. Step 4: Simplify right side
    20,958.84x = 519,356,451.18
  5. Step 5: Solve for x
    x = 519,356,451.18/20,958.84
  6. Step 6: Final answer
    x = 24,779.83

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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.