Home / 21,142.60-29,177.31-11,583.01

Finding the Fourth Proportional to 21,142.60, 29,177.31 and 11,583.01

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Solution

The fourth proportional to 21,142.60, 29,177.31 and 11,583.01 is: 15,984.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,142.60 : 29,177.31 = 11,583.01 : x
  2. Step 2: Convert to fraction form
    21,142.60/29,177.31 = 11,583.01/x
  3. Step 3: Cross multiply
    21,142.60x = 29,177.31 × 11,583.01
  4. Step 4: Simplify right side
    21,142.60x = 337,961,073.50
  5. Step 5: Solve for x
    x = 337,961,073.50/21,142.60
  6. Step 6: Final answer
    x = 15,984.84

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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.