Home / 28,020.78-42,037.32-8,300.88

Finding the Fourth Proportional to 28,020.78, 42,037.32 and 8,300.88

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Solution

The fourth proportional to 28,020.78, 42,037.32 and 8,300.88 is: 12,453.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,020.78 : 42,037.32 = 8,300.88 : x
  2. Step 2: Convert to fraction form
    28,020.78/42,037.32 = 8,300.88/x
  3. Step 3: Cross multiply
    28,020.78x = 42,037.32 × 8,300.88
  4. Step 4: Simplify right side
    28,020.78x = 348,946,748.84
  5. Step 5: Solve for x
    x = 348,946,748.84/28,020.78
  6. Step 6: Final answer
    x = 12,453.14

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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.