Home / 28,203.12-42,285.24-13,399.56

Finding the Fourth Proportional to 28,203.12, 42,285.24 and 13,399.56

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Solution

The fourth proportional to 28,203.12, 42,285.24 and 13,399.56 is: 20,090.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,203.12 : 42,285.24 = 13,399.56 : x
  2. Step 2: Convert to fraction form
    28,203.12/42,285.24 = 13,399.56/x
  3. Step 3: Cross multiply
    28,203.12x = 42,285.24 × 13,399.56
  4. Step 4: Simplify right side
    28,203.12x = 566,603,610.49
  5. Step 5: Solve for x
    x = 566,603,610.49/28,203.12
  6. Step 6: Final answer
    x = 20,090.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.