Home / 17,679.89-26,528.47-8,320.85

Finding the Fourth Proportional to 17,679.89, 26,528.47 and 8,320.85

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Solution

The fourth proportional to 17,679.89, 26,528.47 and 8,320.85 is: 12,485.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,679.89 : 26,528.47 = 8,320.85 : x
  2. Step 2: Convert to fraction form
    17,679.89/26,528.47 = 8,320.85/x
  3. Step 3: Cross multiply
    17,679.89x = 26,528.47 × 8,320.85
  4. Step 4: Simplify right side
    17,679.89x = 220,739,419.60
  5. Step 5: Solve for x
    x = 220,739,419.60/17,679.89
  6. Step 6: Final answer
    x = 12,485.34

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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.