Home / 20,659.93-28,509.78-11,706.91

Finding the Fourth Proportional to 20,659.93, 28,509.78 and 11,706.91

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Solution

The fourth proportional to 20,659.93, 28,509.78 and 11,706.91 is: 16,155.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,659.93 : 28,509.78 = 11,706.91 : x
  2. Step 2: Convert to fraction form
    20,659.93/28,509.78 = 11,706.91/x
  3. Step 3: Cross multiply
    20,659.93x = 28,509.78 × 11,706.91
  4. Step 4: Simplify right side
    20,659.93x = 333,761,428.58
  5. Step 5: Solve for x
    x = 333,761,428.58/20,659.93
  6. Step 6: Final answer
    x = 16,155.01

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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.