Home / 21,539.55-29,724.67-12,107.51

Finding the Fourth Proportional to 21,539.55, 29,724.67 and 12,107.51

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Solution

The fourth proportional to 21,539.55, 29,724.67 and 12,107.51 is: 16,708.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,539.55 : 29,724.67 = 12,107.51 : x
  2. Step 2: Convert to fraction form
    21,539.55/29,724.67 = 12,107.51/x
  3. Step 3: Cross multiply
    21,539.55x = 29,724.67 × 12,107.51
  4. Step 4: Simplify right side
    21,539.55x = 359,891,739.27
  5. Step 5: Solve for x
    x = 359,891,739.27/21,539.55
  6. Step 6: Final answer
    x = 16,708.41

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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.