Home / 14,186.70-21,281.50-5,428.98

Finding the Fourth Proportional to 14,186.70, 21,281.50 and 5,428.98

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Solution

The fourth proportional to 14,186.70, 21,281.50 and 5,428.98 is: 8,144.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,186.70 : 21,281.50 = 5,428.98 : x
  2. Step 2: Convert to fraction form
    14,186.70/21,281.50 = 5,428.98/x
  3. Step 3: Cross multiply
    14,186.70x = 21,281.50 × 5,428.98
  4. Step 4: Simplify right side
    14,186.70x = 115,536,837.87
  5. Step 5: Solve for x
    x = 115,536,837.87/14,186.70
  6. Step 6: Final answer
    x = 8,144.02

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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.