Home / 21,140-29,174.12-11,708.60

Finding the Fourth Proportional to 21,140, 29,174.12 and 11,708.60

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Solution

The fourth proportional to 21,140, 29,174.12 and 11,708.60 is: 16,158.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,140 : 29,174.12 = 11,708.60 : x
  2. Step 2: Convert to fraction form
    21,140/29,174.12 = 11,708.60/x
  3. Step 3: Cross multiply
    21,140x = 29,174.12 × 11,708.60
  4. Step 4: Simplify right side
    21,140x = 341,588,101.43
  5. Step 5: Solve for x
    x = 341,588,101.43/21,140
  6. Step 6: Final answer
    x = 16,158.38

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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.