Home / 14,001.40-20,999.70-5,231.80

Finding the Fourth Proportional to 14,001.40, 20,999.70 and 5,231.80

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Solution

The fourth proportional to 14,001.40, 20,999.70 and 5,231.80 is: 7,846.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,001.40 : 20,999.70 = 5,231.80 : x
  2. Step 2: Convert to fraction form
    14,001.40/20,999.70 = 5,231.80/x
  3. Step 3: Cross multiply
    14,001.40x = 20,999.70 × 5,231.80
  4. Step 4: Simplify right side
    14,001.40x = 109,866,230.46
  5. Step 5: Solve for x
    x = 109,866,230.46/14,001.40
  6. Step 6: Final answer
    x = 7,846.80

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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.