Home / 28,658.36-42,989.60-12,001.64

Finding the Fourth Proportional to 28,658.36, 42,989.60 and 12,001.64

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Solution

The fourth proportional to 28,658.36, 42,989.60 and 12,001.64 is: 18,003.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,658.36 : 42,989.60 = 12,001.64 : x
  2. Step 2: Convert to fraction form
    28,658.36/42,989.60 = 12,001.64/x
  3. Step 3: Cross multiply
    28,658.36x = 42,989.60 × 12,001.64
  4. Step 4: Simplify right side
    28,658.36x = 515,945,702.94
  5. Step 5: Solve for x
    x = 515,945,702.94/28,658.36
  6. Step 6: Final answer
    x = 18,003.32

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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.