Home / 15,739.84-21,720.93-8,666.27

Finding the Fourth Proportional to 15,739.84, 21,720.93 and 8,666.27

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Solution

The fourth proportional to 15,739.84, 21,720.93 and 8,666.27 is: 11,959.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,739.84 : 21,720.93 = 8,666.27 : x
  2. Step 2: Convert to fraction form
    15,739.84/21,720.93 = 8,666.27/x
  3. Step 3: Cross multiply
    15,739.84x = 21,720.93 × 8,666.27
  4. Step 4: Simplify right side
    15,739.84x = 188,239,396.41
  5. Step 5: Solve for x
    x = 188,239,396.41/15,739.84
  6. Step 6: Final answer
    x = 11,959.42

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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.