Home / 12,388.40-18,582.60-3,154.40

Finding the Fourth Proportional to 12,388.40, 18,582.60 and 3,154.40

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Solution

The fourth proportional to 12,388.40, 18,582.60 and 3,154.40 is: 4,731.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,388.40 : 18,582.60 = 3,154.40 : x
  2. Step 2: Convert to fraction form
    12,388.40/18,582.60 = 3,154.40/x
  3. Step 3: Cross multiply
    12,388.40x = 18,582.60 × 3,154.40
  4. Step 4: Simplify right side
    12,388.40x = 58,616,953.44
  5. Step 5: Solve for x
    x = 58,616,953.44/12,388.40
  6. Step 6: Final answer
    x = 4,731.60

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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.