Home / 20,673.81-28,529.34-12,061.64

Finding the Fourth Proportional to 20,673.81, 28,529.34 and 12,061.64

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Solution

The fourth proportional to 20,673.81, 28,529.34 and 12,061.64 is: 16,644.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,673.81 : 28,529.34 = 12,061.64 : x
  2. Step 2: Convert to fraction form
    20,673.81/28,529.34 = 12,061.64/x
  3. Step 3: Cross multiply
    20,673.81x = 28,529.34 × 12,061.64
  4. Step 4: Simplify right side
    20,673.81x = 344,110,628.52
  5. Step 5: Solve for x
    x = 344,110,628.52/20,673.81
  6. Step 6: Final answer
    x = 16,644.76

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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.