Home / 20,873.79-28,805.61-11,442.30

Finding the Fourth Proportional to 20,873.79, 28,805.61 and 11,442.30

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Solution

The fourth proportional to 20,873.79, 28,805.61 and 11,442.30 is: 15,790.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,873.79 : 28,805.61 = 11,442.30 : x
  2. Step 2: Convert to fraction form
    20,873.79/28,805.61 = 11,442.30/x
  3. Step 3: Cross multiply
    20,873.79x = 28,805.61 × 11,442.30
  4. Step 4: Simplify right side
    20,873.79x = 329,602,431.30
  5. Step 5: Solve for x
    x = 329,602,431.30/20,873.79
  6. Step 6: Final answer
    x = 15,790.25

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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.