Home / 21,135.42-29,165.72-11,703.38

Finding the Fourth Proportional to 21,135.42, 29,165.72 and 11,703.38

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Solution

The fourth proportional to 21,135.42, 29,165.72 and 11,703.38 is: 16,150.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,135.42 : 29,165.72 = 11,703.38 : x
  2. Step 2: Convert to fraction form
    21,135.42/29,165.72 = 11,703.38/x
  3. Step 3: Cross multiply
    21,135.42x = 29,165.72 × 11,703.38
  4. Step 4: Simplify right side
    21,135.42x = 341,337,299.79
  5. Step 5: Solve for x
    x = 341,337,299.79/21,135.42
  6. Step 6: Final answer
    x = 16,150.01

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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.