Home / 15,294.07-21,107.42-8,581.51

Finding the Fourth Proportional to 15,294.07, 21,107.42 and 8,581.51

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Solution

The fourth proportional to 15,294.07, 21,107.42 and 8,581.51 is: 11,843.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,294.07 : 21,107.42 = 8,581.51 : x
  2. Step 2: Convert to fraction form
    15,294.07/21,107.42 = 8,581.51/x
  3. Step 3: Cross multiply
    15,294.07x = 21,107.42 × 8,581.51
  4. Step 4: Simplify right side
    15,294.07x = 181,133,535.80
  5. Step 5: Solve for x
    x = 181,133,535.80/15,294.07
  6. Step 6: Final answer
    x = 11,843.38

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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.