Home / 20,847.57-28,774.11-13,292.16

Finding the Fourth Proportional to 20,847.57, 28,774.11 and 13,292.16

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Solution

The fourth proportional to 20,847.57, 28,774.11 and 13,292.16 is: 18,346.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,847.57 : 28,774.11 = 13,292.16 : x
  2. Step 2: Convert to fraction form
    20,847.57/28,774.11 = 13,292.16/x
  3. Step 3: Cross multiply
    20,847.57x = 28,774.11 × 13,292.16
  4. Step 4: Simplify right side
    20,847.57x = 382,470,073.98
  5. Step 5: Solve for x
    x = 382,470,073.98/20,847.57
  6. Step 6: Final answer
    x = 18,346.03

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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.