Home / 21,708.86-29,957.16-12,277.22

Finding the Fourth Proportional to 21,708.86, 29,957.16 and 12,277.22

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Solution

The fourth proportional to 21,708.86, 29,957.16 and 12,277.22 is: 16,941.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,708.86 : 29,957.16 = 12,277.22 : x
  2. Step 2: Convert to fraction form
    21,708.86/29,957.16 = 12,277.22/x
  3. Step 3: Cross multiply
    21,708.86x = 29,957.16 × 12,277.22
  4. Step 4: Simplify right side
    21,708.86x = 367,790,643.90
  5. Step 5: Solve for x
    x = 367,790,643.90/21,708.86
  6. Step 6: Final answer
    x = 16,941.96

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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.