Home / 12,319.70-18,478.53-6,396.57

Finding the Fourth Proportional to 12,319.70, 18,478.53 and 6,396.57

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Solution

The fourth proportional to 12,319.70, 18,478.53 and 6,396.57 is: 9,594.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,319.70 : 18,478.53 = 6,396.57 : x
  2. Step 2: Convert to fraction form
    12,319.70/18,478.53 = 6,396.57/x
  3. Step 3: Cross multiply
    12,319.70x = 18,478.53 × 6,396.57
  4. Step 4: Simplify right side
    12,319.70x = 118,199,210.64
  5. Step 5: Solve for x
    x = 118,199,210.64/12,319.70
  6. Step 6: Final answer
    x = 9,594.33

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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.