Home / 13,586.67-20,418.89-6,666.03

Finding the Fourth Proportional to 13,586.67, 20,418.89 and 6,666.03

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Solution

The fourth proportional to 13,586.67, 20,418.89 and 6,666.03 is: 10,018.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,586.67 : 20,418.89 = 6,666.03 : x
  2. Step 2: Convert to fraction form
    13,586.67/20,418.89 = 6,666.03/x
  3. Step 3: Cross multiply
    13,586.67x = 20,418.89 × 6,666.03
  4. Step 4: Simplify right side
    13,586.67x = 136,112,899.98
  5. Step 5: Solve for x
    x = 136,112,899.98/13,586.67
  6. Step 6: Final answer
    x = 10,018.12

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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.