Home / 21,086.60-31,629.90-8,598.84

Finding the Fourth Proportional to 21,086.60, 31,629.90 and 8,598.84

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Solution

The fourth proportional to 21,086.60, 31,629.90 and 8,598.84 is: 12,898.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,086.60 : 31,629.90 = 8,598.84 : x
  2. Step 2: Convert to fraction form
    21,086.60/31,629.90 = 8,598.84/x
  3. Step 3: Cross multiply
    21,086.60x = 31,629.90 × 8,598.84
  4. Step 4: Simplify right side
    21,086.60x = 271,980,449.32
  5. Step 5: Solve for x
    x = 271,980,449.32/21,086.60
  6. Step 6: Final answer
    x = 12,898.26

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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.