Home / 21,283.32-29,370.78-11,851.32

Finding the Fourth Proportional to 21,283.32, 29,370.78 and 11,851.32

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Solution

The fourth proportional to 21,283.32, 29,370.78 and 11,851.32 is: 16,354.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,283.32 : 29,370.78 = 11,851.32 : x
  2. Step 2: Convert to fraction form
    21,283.32/29,370.78 = 11,851.32/x
  3. Step 3: Cross multiply
    21,283.32x = 29,370.78 × 11,851.32
  4. Step 4: Simplify right side
    21,283.32x = 348,082,512.43
  5. Step 5: Solve for x
    x = 348,082,512.43/21,283.32
  6. Step 6: Final answer
    x = 16,354.71

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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.