Home / 20,130.24-27,783.04-11,745.12

Finding the Fourth Proportional to 20,130.24, 27,783.04 and 11,745.12

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Solution

The fourth proportional to 20,130.24, 27,783.04 and 11,745.12 is: 16,210.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,130.24 : 27,783.04 = 11,745.12 : x
  2. Step 2: Convert to fraction form
    20,130.24/27,783.04 = 11,745.12/x
  3. Step 3: Cross multiply
    20,130.24x = 27,783.04 × 11,745.12
  4. Step 4: Simplify right side
    20,130.24x = 326,315,138.76
  5. Step 5: Solve for x
    x = 326,315,138.76/20,130.24
  6. Step 6: Final answer
    x = 16,210.20

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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.