Home / 20,655.33-28,509.54-11,708.17

Finding the Fourth Proportional to 20,655.33, 28,509.54 and 11,708.17

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Solution

The fourth proportional to 20,655.33, 28,509.54 and 11,708.17 is: 16,160.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,655.33 : 28,509.54 = 11,708.17 : x
  2. Step 2: Convert to fraction form
    20,655.33/28,509.54 = 11,708.17/x
  3. Step 3: Cross multiply
    20,655.33x = 28,509.54 × 11,708.17
  4. Step 4: Simplify right side
    20,655.33x = 333,794,339.85
  5. Step 5: Solve for x
    x = 333,794,339.85/20,655.33
  6. Step 6: Final answer
    x = 16,160.21

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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.