Home / 12,579.60-18,869.40-12,493.20

Finding the Fourth Proportional to 12,579.60, 18,869.40 and 12,493.20

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Solution

The fourth proportional to 12,579.60, 18,869.40 and 12,493.20 is: 18,739.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,579.60 : 18,869.40 = 12,493.20 : x
  2. Step 2: Convert to fraction form
    12,579.60/18,869.40 = 12,493.20/x
  3. Step 3: Cross multiply
    12,579.60x = 18,869.40 × 12,493.20
  4. Step 4: Simplify right side
    12,579.60x = 235,739,188.08
  5. Step 5: Solve for x
    x = 235,739,188.08/12,579.60
  6. Step 6: Final answer
    x = 18,739.80

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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.