Home / 20,797.02-28,702.55-11,847.74

Finding the Fourth Proportional to 20,797.02, 28,702.55 and 11,847.74

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Solution

The fourth proportional to 20,797.02, 28,702.55 and 11,847.74 is: 16,351.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,797.02 : 28,702.55 = 11,847.74 : x
  2. Step 2: Convert to fraction form
    20,797.02/28,702.55 = 11,847.74/x
  3. Step 3: Cross multiply
    20,797.02x = 28,702.55 × 11,847.74
  4. Step 4: Simplify right side
    20,797.02x = 340,060,235.84
  5. Step 5: Solve for x
    x = 340,060,235.84/20,797.02
  6. Step 6: Final answer
    x = 16,351.39

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.