Home / 14,000.12-21,003.29-5,115.43

Finding the Fourth Proportional to 14,000.12, 21,003.29 and 5,115.43

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Solution

The fourth proportional to 14,000.12, 21,003.29 and 5,115.43 is: 7,674.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,000.12 : 21,003.29 = 5,115.43 : x
  2. Step 2: Convert to fraction form
    14,000.12/21,003.29 = 5,115.43/x
  3. Step 3: Cross multiply
    14,000.12x = 21,003.29 × 5,115.43
  4. Step 4: Simplify right side
    14,000.12x = 107,440,834.19
  5. Step 5: Solve for x
    x = 107,440,834.19/14,000.12
  6. Step 6: Final answer
    x = 7,674.28

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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.