Home / 21,222.86-31,801.05-13,415.27

Finding the Fourth Proportional to 21,222.86, 31,801.05 and 13,415.27

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Solution

The fourth proportional to 21,222.86, 31,801.05 and 13,415.27 is: 20,101.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,222.86 : 31,801.05 = 13,415.27 : x
  2. Step 2: Convert to fraction form
    21,222.86/31,801.05 = 13,415.27/x
  3. Step 3: Cross multiply
    21,222.86x = 31,801.05 × 13,415.27
  4. Step 4: Simplify right side
    21,222.86x = 426,619,513.03
  5. Step 5: Solve for x
    x = 426,619,513.03/21,222.86
  6. Step 6: Final answer
    x = 20,101.89

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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.