Home / 21,101.07-31,676.04-12,342.27

Finding the Fourth Proportional to 21,101.07, 31,676.04 and 12,342.27

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Solution

The fourth proportional to 21,101.07, 31,676.04 and 12,342.27 is: 18,527.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,101.07 : 31,676.04 = 12,342.27 : x
  2. Step 2: Convert to fraction form
    21,101.07/31,676.04 = 12,342.27/x
  3. Step 3: Cross multiply
    21,101.07x = 31,676.04 × 12,342.27
  4. Step 4: Simplify right side
    21,101.07x = 390,954,238.21
  5. Step 5: Solve for x
    x = 390,954,238.21/21,101.07
  6. Step 6: Final answer
    x = 18,527.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.