Home / 20,984.52-28,956.06-12,486.84

Finding the Fourth Proportional to 20,984.52, 28,956.06 and 12,486.84

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Solution

The fourth proportional to 20,984.52, 28,956.06 and 12,486.84 is: 17,230.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,984.52 : 28,956.06 = 12,486.84 : x
  2. Step 2: Convert to fraction form
    20,984.52/28,956.06 = 12,486.84/x
  3. Step 3: Cross multiply
    20,984.52x = 28,956.06 × 12,486.84
  4. Step 4: Simplify right side
    20,984.52x = 361,569,688.25
  5. Step 5: Solve for x
    x = 361,569,688.25/20,984.52
  6. Step 6: Final answer
    x = 17,230.31

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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.