Home / 30,433.60-45,650.40-18,708.80

Finding the Fourth Proportional to 30,433.60, 45,650.40 and 18,708.80

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Solution

The fourth proportional to 30,433.60, 45,650.40 and 18,708.80 is: 28,063.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,433.60 : 45,650.40 = 18,708.80 : x
  2. Step 2: Convert to fraction form
    30,433.60/45,650.40 = 18,708.80/x
  3. Step 3: Cross multiply
    30,433.60x = 45,650.40 × 18,708.80
  4. Step 4: Simplify right side
    30,433.60x = 854,064,203.52
  5. Step 5: Solve for x
    x = 854,064,203.52/30,433.60
  6. Step 6: Final answer
    x = 28,063.20

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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.