Home / 12,225.30-18,323.55-6,378.90

Finding the Fourth Proportional to 12,225.30, 18,323.55 and 6,378.90

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Solution

The fourth proportional to 12,225.30, 18,323.55 and 6,378.90 is: 9,560.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,225.30 : 18,323.55 = 6,378.90 : x
  2. Step 2: Convert to fraction form
    12,225.30/18,323.55 = 6,378.90/x
  3. Step 3: Cross multiply
    12,225.30x = 18,323.55 × 6,378.90
  4. Step 4: Simplify right side
    12,225.30x = 116,884,093.10
  5. Step 5: Solve for x
    x = 116,884,093.10/12,225.30
  6. Step 6: Final answer
    x = 9,560.84

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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.