Home / 18,669.37-28,009.24-8,140.31

Finding the Fourth Proportional to 18,669.37, 28,009.24 and 8,140.31

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Solution

The fourth proportional to 18,669.37, 28,009.24 and 8,140.31 is: 12,212.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,669.37 : 28,009.24 = 8,140.31 : x
  2. Step 2: Convert to fraction form
    18,669.37/28,009.24 = 8,140.31/x
  3. Step 3: Cross multiply
    18,669.37x = 28,009.24 × 8,140.31
  4. Step 4: Simplify right side
    18,669.37x = 228,003,715.72
  5. Step 5: Solve for x
    x = 228,003,715.72/18,669.37
  6. Step 6: Final answer
    x = 12,212.72

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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.