Home / 20,606.64-28,437.16-11,175.20

Finding the Fourth Proportional to 20,606.64, 28,437.16 and 11,175.20

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Solution

The fourth proportional to 20,606.64, 28,437.16 and 11,175.20 is: 15,421.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,606.64 : 28,437.16 = 11,175.20 : x
  2. Step 2: Convert to fraction form
    20,606.64/28,437.16 = 11,175.20/x
  3. Step 3: Cross multiply
    20,606.64x = 28,437.16 × 11,175.20
  4. Step 4: Simplify right side
    20,606.64x = 317,790,950.43
  5. Step 5: Solve for x
    x = 317,790,950.43/20,606.64
  6. Step 6: Final answer
    x = 15,421.77

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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.