Home / 20,633.09-28,472.18-11,681.60

Finding the Fourth Proportional to 20,633.09, 28,472.18 and 11,681.60

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Solution

The fourth proportional to 20,633.09, 28,472.18 and 11,681.60 is: 16,119.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,633.09 : 28,472.18 = 11,681.60 : x
  2. Step 2: Convert to fraction form
    20,633.09/28,472.18 = 11,681.60/x
  3. Step 3: Cross multiply
    20,633.09x = 28,472.18 × 11,681.60
  4. Step 4: Simplify right side
    20,633.09x = 332,600,417.12
  5. Step 5: Solve for x
    x = 332,600,417.12/20,633.09
  6. Step 6: Final answer
    x = 16,119.76

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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.