Home / 21,261.90-29,340.72-11,830.26

Finding the Fourth Proportional to 21,261.90, 29,340.72 and 11,830.26

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Solution

The fourth proportional to 21,261.90, 29,340.72 and 11,830.26 is: 16,325.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,261.90 : 29,340.72 = 11,830.26 : x
  2. Step 2: Convert to fraction form
    21,261.90/29,340.72 = 11,830.26/x
  3. Step 3: Cross multiply
    21,261.90x = 29,340.72 × 11,830.26
  4. Step 4: Simplify right side
    21,261.90x = 347,108,346.19
  5. Step 5: Solve for x
    x = 347,108,346.19/21,261.90
  6. Step 6: Final answer
    x = 16,325.37

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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.