Home / 10,999.40-15,179.02-6,283.60

Finding the Fourth Proportional to 10,999.40, 15,179.02 and 6,283.60

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Solution

The fourth proportional to 10,999.40, 15,179.02 and 6,283.60 is: 8,671.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,999.40 : 15,179.02 = 6,283.60 : x
  2. Step 2: Convert to fraction form
    10,999.40/15,179.02 = 6,283.60/x
  3. Step 3: Cross multiply
    10,999.40x = 15,179.02 × 6,283.60
  4. Step 4: Simplify right side
    10,999.40x = 95,378,890.07
  5. Step 5: Solve for x
    x = 95,378,890.07/10,999.40
  6. Step 6: Final answer
    x = 8,671.28

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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.