Home / 21,261.84-29,340.96-11,830.32

Finding the Fourth Proportional to 21,261.84, 29,340.96 and 11,830.32

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Solution

The fourth proportional to 21,261.84, 29,340.96 and 11,830.32 is: 16,325.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,261.84 : 29,340.96 = 11,830.32 : x
  2. Step 2: Convert to fraction form
    21,261.84/29,340.96 = 11,830.32/x
  3. Step 3: Cross multiply
    21,261.84x = 29,340.96 × 11,830.32
  4. Step 4: Simplify right side
    21,261.84x = 347,112,945.91
  5. Step 5: Solve for x
    x = 347,112,945.91/21,261.84
  6. Step 6: Final answer
    x = 16,325.63

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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.