Home / 12,378.13-18,562.58-4,980.09

Finding the Fourth Proportional to 12,378.13, 18,562.58 and 4,980.09

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Solution

The fourth proportional to 12,378.13, 18,562.58 and 4,980.09 is: 7,468.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,378.13 : 18,562.58 = 4,980.09 : x
  2. Step 2: Convert to fraction form
    12,378.13/18,562.58 = 4,980.09/x
  3. Step 3: Cross multiply
    12,378.13x = 18,562.58 × 4,980.09
  4. Step 4: Simplify right side
    12,378.13x = 92,443,294.13
  5. Step 5: Solve for x
    x = 92,443,294.13/12,378.13
  6. Step 6: Final answer
    x = 7,468.28

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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.