Home / 21,140.47-29,174.76-11,709.03

Finding the Fourth Proportional to 21,140.47, 29,174.76 and 11,709.03

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Solution

The fourth proportional to 21,140.47, 29,174.76 and 11,709.03 is: 16,158.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,140.47 : 29,174.76 = 11,709.03 : x
  2. Step 2: Convert to fraction form
    21,140.47/29,174.76 = 11,709.03/x
  3. Step 3: Cross multiply
    21,140.47x = 29,174.76 × 11,709.03
  4. Step 4: Simplify right side
    21,140.47x = 341,608,140.08
  5. Step 5: Solve for x
    x = 341,608,140.08/21,140.47
  6. Step 6: Final answer
    x = 16,158.97

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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.