Home / 21,078.92-31,618.26-8,598.88

Finding the Fourth Proportional to 21,078.92, 31,618.26 and 8,598.88

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Solution

The fourth proportional to 21,078.92, 31,618.26 and 8,598.88 is: 12,898.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,078.92 : 31,618.26 = 8,598.88 : x
  2. Step 2: Convert to fraction form
    21,078.92/31,618.26 = 8,598.88/x
  3. Step 3: Cross multiply
    21,078.92x = 31,618.26 × 8,598.88
  4. Step 4: Simplify right side
    21,078.92x = 271,881,623.55
  5. Step 5: Solve for x
    x = 271,881,623.55/21,078.92
  6. Step 6: Final answer
    x = 12,898.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.