Home / 12,390.54-18,582.45-3,503.76

Finding the Fourth Proportional to 12,390.54, 18,582.45 and 3,503.76

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Solution

The fourth proportional to 12,390.54, 18,582.45 and 3,503.76 is: 5,254.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,390.54 : 18,582.45 = 3,503.76 : x
  2. Step 2: Convert to fraction form
    12,390.54/18,582.45 = 3,503.76/x
  3. Step 3: Cross multiply
    12,390.54x = 18,582.45 × 3,503.76
  4. Step 4: Simplify right side
    12,390.54x = 65,108,362.19
  5. Step 5: Solve for x
    x = 65,108,362.19/12,390.54
  6. Step 6: Final answer
    x = 5,254.68

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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.