Home / 20,745.95-28,629.39-11,314.50

Finding the Fourth Proportional to 20,745.95, 28,629.39 and 11,314.50

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Solution

The fourth proportional to 20,745.95, 28,629.39 and 11,314.50 is: 15,614.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,745.95 : 28,629.39 = 11,314.50 : x
  2. Step 2: Convert to fraction form
    20,745.95/28,629.39 = 11,314.50/x
  3. Step 3: Cross multiply
    20,745.95x = 28,629.39 × 11,314.50
  4. Step 4: Simplify right side
    20,745.95x = 323,927,233.16
  5. Step 5: Solve for x
    x = 323,927,233.16/20,745.95
  6. Step 6: Final answer
    x = 15,614.00

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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.