Home / 21,407.12-29,542.44-11,975.72

Finding the Fourth Proportional to 21,407.12, 29,542.44 and 11,975.72

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Solution

The fourth proportional to 21,407.12, 29,542.44 and 11,975.72 is: 16,526.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,407.12 : 29,542.44 = 11,975.72 : x
  2. Step 2: Convert to fraction form
    21,407.12/29,542.44 = 11,975.72/x
  3. Step 3: Cross multiply
    21,407.12x = 29,542.44 × 11,975.72
  4. Step 4: Simplify right side
    21,407.12x = 353,791,989.56
  5. Step 5: Solve for x
    x = 353,791,989.56/21,407.12
  6. Step 6: Final answer
    x = 16,526.84

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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.