Home / 17,686.20-26,529.30-7,820.40

Finding the Fourth Proportional to 17,686.20, 26,529.30 and 7,820.40

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Solution

The fourth proportional to 17,686.20, 26,529.30 and 7,820.40 is: 11,730.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,686.20 : 26,529.30 = 7,820.40 : x
  2. Step 2: Convert to fraction form
    17,686.20/26,529.30 = 7,820.40/x
  3. Step 3: Cross multiply
    17,686.20x = 26,529.30 × 7,820.40
  4. Step 4: Simplify right side
    17,686.20x = 207,469,737.72
  5. Step 5: Solve for x
    x = 207,469,737.72/17,686.20
  6. Step 6: Final answer
    x = 11,730.60

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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.