Home / 20,606.63-28,437.03-11,175.20

Finding the Fourth Proportional to 20,606.63, 28,437.03 and 11,175.20

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Solution

The fourth proportional to 20,606.63, 28,437.03 and 11,175.20 is: 15,421.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,606.63 : 28,437.03 = 11,175.20 : x
  2. Step 2: Convert to fraction form
    20,606.63/28,437.03 = 11,175.20/x
  3. Step 3: Cross multiply
    20,606.63x = 28,437.03 × 11,175.20
  4. Step 4: Simplify right side
    20,606.63x = 317,789,497.66
  5. Step 5: Solve for x
    x = 317,789,497.66/20,606.63
  6. Step 6: Final answer
    x = 15,421.71

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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.