Home / 30,220.40-45,330.60-8,037.20

Finding the Fourth Proportional to 30,220.40, 45,330.60 and 8,037.20

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Solution

The fourth proportional to 30,220.40, 45,330.60 and 8,037.20 is: 12,055.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,220.40 : 45,330.60 = 8,037.20 : x
  2. Step 2: Convert to fraction form
    30,220.40/45,330.60 = 8,037.20/x
  3. Step 3: Cross multiply
    30,220.40x = 45,330.60 × 8,037.20
  4. Step 4: Simplify right side
    30,220.40x = 364,331,098.32
  5. Step 5: Solve for x
    x = 364,331,098.32/30,220.40
  6. Step 6: Final answer
    x = 12,055.80

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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.