Home / 20,659.15-28,513.59-11,707.03

Finding the Fourth Proportional to 20,659.15, 28,513.59 and 11,707.03

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Solution

The fourth proportional to 20,659.15, 28,513.59 and 11,707.03 is: 16,157.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,659.15 : 28,513.59 = 11,707.03 : x
  2. Step 2: Convert to fraction form
    20,659.15/28,513.59 = 11,707.03/x
  3. Step 3: Cross multiply
    20,659.15x = 28,513.59 × 11,707.03
  4. Step 4: Simplify right side
    20,659.15x = 333,809,445.28
  5. Step 5: Solve for x
    x = 333,809,445.28/20,659.15
  6. Step 6: Final answer
    x = 16,157.95

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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.