Home / 20,746.08-28,621.44-12,774.48

Finding the Fourth Proportional to 20,746.08, 28,621.44 and 12,774.48

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Solution

The fourth proportional to 20,746.08, 28,621.44 and 12,774.48 is: 17,623.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,746.08 : 28,621.44 = 12,774.48 : x
  2. Step 2: Convert to fraction form
    20,746.08/28,621.44 = 12,774.48/x
  3. Step 3: Cross multiply
    20,746.08x = 28,621.44 × 12,774.48
  4. Step 4: Simplify right side
    20,746.08x = 365,624,012.85
  5. Step 5: Solve for x
    x = 365,624,012.85/20,746.08
  6. Step 6: Final answer
    x = 17,623.76

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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.