Home / 12,314.20-18,459.30-7,043.80

Finding the Fourth Proportional to 12,314.20, 18,459.30 and 7,043.80

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Solution

The fourth proportional to 12,314.20, 18,459.30 and 7,043.80 is: 10,558.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,314.20 : 18,459.30 = 7,043.80 : x
  2. Step 2: Convert to fraction form
    12,314.20/18,459.30 = 7,043.80/x
  3. Step 3: Cross multiply
    12,314.20x = 18,459.30 × 7,043.80
  4. Step 4: Simplify right side
    12,314.20x = 130,023,617.34
  5. Step 5: Solve for x
    x = 130,023,617.34/12,314.20
  6. Step 6: Final answer
    x = 10,558.84

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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.