Home / 30,483.25-45,684.78-12,931.36

Finding the Fourth Proportional to 30,483.25, 45,684.78 and 12,931.36

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Solution

The fourth proportional to 30,483.25, 45,684.78 and 12,931.36 is: 19,380.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,483.25 : 45,684.78 = 12,931.36 : x
  2. Step 2: Convert to fraction form
    30,483.25/45,684.78 = 12,931.36/x
  3. Step 3: Cross multiply
    30,483.25x = 45,684.78 × 12,931.36
  4. Step 4: Simplify right side
    30,483.25x = 590,766,336.70
  5. Step 5: Solve for x
    x = 590,766,336.70/30,483.25
  6. Step 6: Final answer
    x = 19,380.03

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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.