Home / 28,307.40-42,461.20-8,586.12

Finding the Fourth Proportional to 28,307.40, 42,461.20 and 8,586.12

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Solution

The fourth proportional to 28,307.40, 42,461.20 and 8,586.12 is: 12,879.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,307.40 : 42,461.20 = 8,586.12 : x
  2. Step 2: Convert to fraction form
    28,307.40/42,461.20 = 8,586.12/x
  3. Step 3: Cross multiply
    28,307.40x = 42,461.20 × 8,586.12
  4. Step 4: Simplify right side
    28,307.40x = 364,576,958.54
  5. Step 5: Solve for x
    x = 364,576,958.54/28,307.40
  6. Step 6: Final answer
    x = 12,879.21

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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.