Home / 28,204.84-42,308.34-8,486.20

Finding the Fourth Proportional to 28,204.84, 42,308.34 and 8,486.20

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Solution

The fourth proportional to 28,204.84, 42,308.34 and 8,486.20 is: 12,729.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,204.84 : 42,308.34 = 8,486.20 : x
  2. Step 2: Convert to fraction form
    28,204.84/42,308.34 = 8,486.20/x
  3. Step 3: Cross multiply
    28,204.84x = 42,308.34 × 8,486.20
  4. Step 4: Simplify right side
    28,204.84x = 359,037,034.91
  5. Step 5: Solve for x
    x = 359,037,034.91/28,204.84
  6. Step 6: Final answer
    x = 12,729.62

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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.