Home / 28,108.60-42,165.30-9,640.60

Finding the Fourth Proportional to 28,108.60, 42,165.30 and 9,640.60

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Solution

The fourth proportional to 28,108.60, 42,165.30 and 9,640.60 is: 14,461.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,108.60 : 42,165.30 = 9,640.60 : x
  2. Step 2: Convert to fraction form
    28,108.60/42,165.30 = 9,640.60/x
  3. Step 3: Cross multiply
    28,108.60x = 42,165.30 × 9,640.60
  4. Step 4: Simplify right side
    28,108.60x = 406,498,791.18
  5. Step 5: Solve for x
    x = 406,498,791.18/28,108.60
  6. Step 6: Final answer
    x = 14,461.72

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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.