Home / 15,739.99-21,721.07-8,666.26

Finding the Fourth Proportional to 15,739.99, 21,721.07 and 8,666.26

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Solution

The fourth proportional to 15,739.99, 21,721.07 and 8,666.26 is: 11,959.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,739.99 : 21,721.07 = 8,666.26 : x
  2. Step 2: Convert to fraction form
    15,739.99/21,721.07 = 8,666.26/x
  3. Step 3: Cross multiply
    15,739.99x = 21,721.07 × 8,666.26
  4. Step 4: Simplify right side
    15,739.99x = 188,240,440.10
  5. Step 5: Solve for x
    x = 188,240,440.10/15,739.99
  6. Step 6: Final answer
    x = 11,959.37

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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.