Home / 28,686.37-43,012.85-11,135.70

Finding the Fourth Proportional to 28,686.37, 43,012.85 and 11,135.70

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Solution

The fourth proportional to 28,686.37, 43,012.85 and 11,135.70 is: 16,697.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,686.37 : 43,012.85 = 11,135.70 : x
  2. Step 2: Convert to fraction form
    28,686.37/43,012.85 = 11,135.70/x
  3. Step 3: Cross multiply
    28,686.37x = 43,012.85 × 11,135.70
  4. Step 4: Simplify right side
    28,686.37x = 478,978,193.75
  5. Step 5: Solve for x
    x = 478,978,193.75/28,686.37
  6. Step 6: Final answer
    x = 16,697.07

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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.