Home / 28,196.76-42,314.60-27,978.08

Finding the Fourth Proportional to 28,196.76, 42,314.60 and 27,978.08

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Solution

The fourth proportional to 28,196.76, 42,314.60 and 27,978.08 is: 41,986.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,196.76 : 42,314.60 = 27,978.08 : x
  2. Step 2: Convert to fraction form
    28,196.76/42,314.60 = 27,978.08/x
  3. Step 3: Cross multiply
    28,196.76x = 42,314.60 × 27,978.08
  4. Step 4: Simplify right side
    28,196.76x = 1,183,881,263.97
  5. Step 5: Solve for x
    x = 1,183,881,263.97/28,196.76
  6. Step 6: Final answer
    x = 41,986.43

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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.