Home / 20,579.50-28,400.93-11,626.77

Finding the Fourth Proportional to 20,579.50, 28,400.93 and 11,626.77

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Solution

The fourth proportional to 20,579.50, 28,400.93 and 11,626.77 is: 16,045.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,579.50 : 28,400.93 = 11,626.77 : x
  2. Step 2: Convert to fraction form
    20,579.50/28,400.93 = 11,626.77/x
  3. Step 3: Cross multiply
    20,579.50x = 28,400.93 × 11,626.77
  4. Step 4: Simplify right side
    20,579.50x = 330,211,080.90
  5. Step 5: Solve for x
    x = 330,211,080.90/20,579.50
  6. Step 6: Final answer
    x = 16,045.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.