Home / 20,584.69-28,406.96-11,153.23

Finding the Fourth Proportional to 20,584.69, 28,406.96 and 11,153.23

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Solution

The fourth proportional to 20,584.69, 28,406.96 and 11,153.23 is: 15,391.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,584.69 : 28,406.96 = 11,153.23 : x
  2. Step 2: Convert to fraction form
    20,584.69/28,406.96 = 11,153.23/x
  3. Step 3: Cross multiply
    20,584.69x = 28,406.96 × 11,153.23
  4. Step 4: Simplify right side
    20,584.69x = 316,829,358.48
  5. Step 5: Solve for x
    x = 316,829,358.48/20,584.69
  6. Step 6: Final answer
    x = 15,391.50

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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.