Home / 20,483.94-28,267.90-11,531.58

Finding the Fourth Proportional to 20,483.94, 28,267.90 and 11,531.58

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Solution

The fourth proportional to 20,483.94, 28,267.90 and 11,531.58 is: 15,913.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,483.94 : 28,267.90 = 11,531.58 : x
  2. Step 2: Convert to fraction form
    20,483.94/28,267.90 = 11,531.58/x
  3. Step 3: Cross multiply
    20,483.94x = 28,267.90 × 11,531.58
  4. Step 4: Simplify right side
    20,483.94x = 325,973,521.45
  5. Step 5: Solve for x
    x = 325,973,521.45/20,483.94
  6. Step 6: Final answer
    x = 15,913.61

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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.