Home / 12,415.28-18,622.40-3,055.32

Finding the Fourth Proportional to 12,415.28, 18,622.40 and 3,055.32

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Solution

The fourth proportional to 12,415.28, 18,622.40 and 3,055.32 is: 4,582.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,415.28 : 18,622.40 = 3,055.32 : x
  2. Step 2: Convert to fraction form
    12,415.28/18,622.40 = 3,055.32/x
  3. Step 3: Cross multiply
    12,415.28x = 18,622.40 × 3,055.32
  4. Step 4: Simplify right side
    12,415.28x = 56,897,375.89
  5. Step 5: Solve for x
    x = 56,897,375.89/12,415.28
  6. Step 6: Final answer
    x = 4,582.85

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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.