Home / 12,420.60-18,631.10-3,060.64

Finding the Fourth Proportional to 12,420.60, 18,631.10 and 3,060.64

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Solution

The fourth proportional to 12,420.60, 18,631.10 and 3,060.64 is: 4,591.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,420.60 : 18,631.10 = 3,060.64 : x
  2. Step 2: Convert to fraction form
    12,420.60/18,631.10 = 3,060.64/x
  3. Step 3: Cross multiply
    12,420.60x = 18,631.10 × 3,060.64
  4. Step 4: Simplify right side
    12,420.60x = 57,023,089.90
  5. Step 5: Solve for x
    x = 57,023,089.90/12,420.60
  6. Step 6: Final answer
    x = 4,591.01

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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.