Home / 30,138.98-45,197.96-12,364.52

Finding the Fourth Proportional to 30,138.98, 45,197.96 and 12,364.52

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Solution

The fourth proportional to 30,138.98, 45,197.96 and 12,364.52 is: 18,542.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,138.98 : 45,197.96 = 12,364.52 : x
  2. Step 2: Convert to fraction form
    30,138.98/45,197.96 = 12,364.52/x
  3. Step 3: Cross multiply
    30,138.98x = 45,197.96 × 12,364.52
  4. Step 4: Simplify right side
    30,138.98x = 558,850,792.57
  5. Step 5: Solve for x
    x = 558,850,792.57/30,138.98
  6. Step 6: Final answer
    x = 18,542.46

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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.