Home / 20,658.84-28,509.09-11,708.04

Finding the Fourth Proportional to 20,658.84, 28,509.09 and 11,708.04

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Solution

The fourth proportional to 20,658.84, 28,509.09 and 11,708.04 is: 16,157.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,658.84 : 28,509.09 = 11,708.04 : x
  2. Step 2: Convert to fraction form
    20,658.84/28,509.09 = 11,708.04/x
  3. Step 3: Cross multiply
    20,658.84x = 28,509.09 × 11,708.04
  4. Step 4: Simplify right side
    20,658.84x = 333,785,566.08
  5. Step 5: Solve for x
    x = 333,785,566.08/20,658.84
  6. Step 6: Final answer
    x = 16,157.03

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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.