Home / 14,040.34-20,969.48-12,721.46

Finding the Fourth Proportional to 14,040.34, 20,969.48 and 12,721.46

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Solution

The fourth proportional to 14,040.34, 20,969.48 and 12,721.46 is: 18,999.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,040.34 : 20,969.48 = 12,721.46 : x
  2. Step 2: Convert to fraction form
    14,040.34/20,969.48 = 12,721.46/x
  3. Step 3: Cross multiply
    14,040.34x = 20,969.48 × 12,721.46
  4. Step 4: Simplify right side
    14,040.34x = 266,762,348.62
  5. Step 5: Solve for x
    x = 266,762,348.62/14,040.34
  6. Step 6: Final answer
    x = 18,999.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.