Home / 13,047.01-18,129.77-12,911.54

Finding the Fourth Proportional to 13,047.01, 18,129.77 and 12,911.54

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Solution

The fourth proportional to 13,047.01, 18,129.77 and 12,911.54 is: 17,941.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,047.01 : 18,129.77 = 12,911.54 : x
  2. Step 2: Convert to fraction form
    13,047.01/18,129.77 = 12,911.54/x
  3. Step 3: Cross multiply
    13,047.01x = 18,129.77 × 12,911.54
  4. Step 4: Simplify right side
    13,047.01x = 234,083,250.55
  5. Step 5: Solve for x
    x = 234,083,250.55/13,047.01
  6. Step 6: Final answer
    x = 17,941.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.