Home / 20,866.09-31,220.67-14,638.26

Finding the Fourth Proportional to 20,866.09, 31,220.67 and 14,638.26

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Solution

The fourth proportional to 20,866.09, 31,220.67 and 14,638.26 is: 21,902.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,866.09 : 31,220.67 = 14,638.26 : x
  2. Step 2: Convert to fraction form
    20,866.09/31,220.67 = 14,638.26/x
  3. Step 3: Cross multiply
    20,866.09x = 31,220.67 × 14,638.26
  4. Step 4: Simplify right side
    20,866.09x = 457,016,284.83
  5. Step 5: Solve for x
    x = 457,016,284.83/20,866.09
  6. Step 6: Final answer
    x = 21,902.34

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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.