Home / 14,003.40-21,000.21-4,140.06

Finding the Fourth Proportional to 14,003.40, 21,000.21 and 4,140.06

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Solution

The fourth proportional to 14,003.40, 21,000.21 and 4,140.06 is: 6,208.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,003.40 : 21,000.21 = 4,140.06 : x
  2. Step 2: Convert to fraction form
    14,003.40/21,000.21 = 4,140.06/x
  3. Step 3: Cross multiply
    14,003.40x = 21,000.21 × 4,140.06
  4. Step 4: Simplify right side
    14,003.40x = 86,942,129.41
  5. Step 5: Solve for x
    x = 86,942,129.41/14,003.40
  6. Step 6: Final answer
    x = 6,208.64

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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.