Home / 20,130.60-27,782.94-12,173.16

Finding the Fourth Proportional to 20,130.60, 27,782.94 and 12,173.16

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Solution

The fourth proportional to 20,130.60, 27,782.94 and 12,173.16 is: 16,800.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,130.60 : 27,782.94 = 12,173.16 : x
  2. Step 2: Convert to fraction form
    20,130.60/27,782.94 = 12,173.16/x
  3. Step 3: Cross multiply
    20,130.60x = 27,782.94 × 12,173.16
  4. Step 4: Simplify right side
    20,130.60x = 338,206,173.89
  5. Step 5: Solve for x
    x = 338,206,173.89/20,130.60
  6. Step 6: Final answer
    x = 16,800.60

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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.