Home / 20,135.55-27,790.68-11,636.51

Finding the Fourth Proportional to 20,135.55, 27,790.68 and 11,636.51

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Solution

The fourth proportional to 20,135.55, 27,790.68 and 11,636.51 is: 16,060.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,135.55 : 27,790.68 = 11,636.51 : x
  2. Step 2: Convert to fraction form
    20,135.55/27,790.68 = 11,636.51/x
  3. Step 3: Cross multiply
    20,135.55x = 27,790.68 × 11,636.51
  4. Step 4: Simplify right side
    20,135.55x = 323,386,386.77
  5. Step 5: Solve for x
    x = 323,386,386.77/20,135.55
  6. Step 6: Final answer
    x = 16,060.47

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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.