Home / 28,495.05-42,719.55-11,867.59

Finding the Fourth Proportional to 28,495.05, 42,719.55 and 11,867.59

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Solution

The fourth proportional to 28,495.05, 42,719.55 and 11,867.59 is: 17,791.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,495.05 : 42,719.55 = 11,867.59 : x
  2. Step 2: Convert to fraction form
    28,495.05/42,719.55 = 11,867.59/x
  3. Step 3: Cross multiply
    28,495.05x = 42,719.55 × 11,867.59
  4. Step 4: Simplify right side
    28,495.05x = 506,978,104.38
  5. Step 5: Solve for x
    x = 506,978,104.38/28,495.05
  6. Step 6: Final answer
    x = 17,791.80

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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.