Home / 12,404.40-18,628.20-12,015.60

Finding the Fourth Proportional to 12,404.40, 18,628.20 and 12,015.60

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Solution

The fourth proportional to 12,404.40, 18,628.20 and 12,015.60 is: 18,044.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,404.40 : 18,628.20 = 12,015.60 : x
  2. Step 2: Convert to fraction form
    12,404.40/18,628.20 = 12,015.60/x
  3. Step 3: Cross multiply
    12,404.40x = 18,628.20 × 12,015.60
  4. Step 4: Simplify right side
    12,404.40x = 223,828,999.92
  5. Step 5: Solve for x
    x = 223,828,999.92/12,404.40
  6. Step 6: Final answer
    x = 18,044.32

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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.