Home / 21,140.60-29,173.92-11,709.14

Finding the Fourth Proportional to 21,140.60, 29,173.92 and 11,709.14

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Solution

The fourth proportional to 21,140.60, 29,173.92 and 11,709.14 is: 16,158.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,140.60 : 29,173.92 = 11,709.14 : x
  2. Step 2: Convert to fraction form
    21,140.60/29,173.92 = 11,709.14/x
  3. Step 3: Cross multiply
    21,140.60x = 29,173.92 × 11,709.14
  4. Step 4: Simplify right side
    21,140.60x = 341,601,513.63
  5. Step 5: Solve for x
    x = 341,601,513.63/21,140.60
  6. Step 6: Final answer
    x = 16,158.55

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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.