Home / 21,125.51-29,155.23-11,694.07

Finding the Fourth Proportional to 21,125.51, 29,155.23 and 11,694.07

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Solution

The fourth proportional to 21,125.51, 29,155.23 and 11,694.07 is: 16,138.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,125.51 : 29,155.23 = 11,694.07 : x
  2. Step 2: Convert to fraction form
    21,125.51/29,155.23 = 11,694.07/x
  3. Step 3: Cross multiply
    21,125.51x = 29,155.23 × 11,694.07
  4. Step 4: Simplify right side
    21,125.51x = 340,943,096.24
  5. Step 5: Solve for x
    x = 340,943,096.24/21,125.51
  6. Step 6: Final answer
    x = 16,138.93

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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.