Home / 28,237.60-42,348.30-8,511.40

Finding the Fourth Proportional to 28,237.60, 42,348.30 and 8,511.40

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Solution

The fourth proportional to 28,237.60, 42,348.30 and 8,511.40 is: 12,764.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,237.60 : 42,348.30 = 8,511.40 : x
  2. Step 2: Convert to fraction form
    28,237.60/42,348.30 = 8,511.40/x
  3. Step 3: Cross multiply
    28,237.60x = 42,348.30 × 8,511.40
  4. Step 4: Simplify right side
    28,237.60x = 360,443,320.62
  5. Step 5: Solve for x
    x = 360,443,320.62/28,237.60
  6. Step 6: Final answer
    x = 12,764.66

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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.