Home / 17,900.21-26,855.18-5,420.66

Finding the Fourth Proportional to 17,900.21, 26,855.18 and 5,420.66

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Solution

The fourth proportional to 17,900.21, 26,855.18 and 5,420.66 is: 8,132.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,900.21 : 26,855.18 = 5,420.66 : x
  2. Step 2: Convert to fraction form
    17,900.21/26,855.18 = 5,420.66/x
  3. Step 3: Cross multiply
    17,900.21x = 26,855.18 × 5,420.66
  4. Step 4: Simplify right side
    17,900.21x = 145,572,638.64
  5. Step 5: Solve for x
    x = 145,572,638.64/17,900.21
  6. Step 6: Final answer
    x = 8,132.46

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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.