Home / 21,134.65-29,165.81-11,703.21

Finding the Fourth Proportional to 21,134.65, 29,165.81 and 11,703.21

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Solution

The fourth proportional to 21,134.65, 29,165.81 and 11,703.21 is: 16,150.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,134.65 : 29,165.81 = 11,703.21 : x
  2. Step 2: Convert to fraction form
    21,134.65/29,165.81 = 11,703.21/x
  3. Step 3: Cross multiply
    21,134.65x = 29,165.81 × 11,703.21
  4. Step 4: Simplify right side
    21,134.65x = 341,333,394.91
  5. Step 5: Solve for x
    x = 341,333,394.91/21,134.65
  6. Step 6: Final answer
    x = 16,150.42

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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.