Home / 30,152.39-45,228.74-12,378.44

Finding the Fourth Proportional to 30,152.39, 45,228.74 and 12,378.44

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Solution

The fourth proportional to 30,152.39, 45,228.74 and 12,378.44 is: 18,567.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,152.39 : 45,228.74 = 12,378.44 : x
  2. Step 2: Convert to fraction form
    30,152.39/45,228.74 = 12,378.44/x
  3. Step 3: Cross multiply
    30,152.39x = 45,228.74 × 12,378.44
  4. Step 4: Simplify right side
    30,152.39x = 559,861,295.55
  5. Step 5: Solve for x
    x = 559,861,295.55/30,152.39
  6. Step 6: Final answer
    x = 18,567.73

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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.