Home / 14,276.80-19,702.40-7,989.60

Finding the Fourth Proportional to 14,276.80, 19,702.40 and 7,989.60

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Solution

The fourth proportional to 14,276.80, 19,702.40 and 7,989.60 is: 11,025.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,276.80 : 19,702.40 = 7,989.60 : x
  2. Step 2: Convert to fraction form
    14,276.80/19,702.40 = 7,989.60/x
  3. Step 3: Cross multiply
    14,276.80x = 19,702.40 × 7,989.60
  4. Step 4: Simplify right side
    14,276.80x = 157,414,295.04
  5. Step 5: Solve for x
    x = 157,414,295.04/14,276.80
  6. Step 6: Final answer
    x = 11,025.88

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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.