Home / 10,777.20-16,165.80-9,999.60

Finding the Fourth Proportional to 10,777.20, 16,165.80 and 9,999.60

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Solution

The fourth proportional to 10,777.20, 16,165.80 and 9,999.60 is: 14,999.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,777.20 : 16,165.80 = 9,999.60 : x
  2. Step 2: Convert to fraction form
    10,777.20/16,165.80 = 9,999.60/x
  3. Step 3: Cross multiply
    10,777.20x = 16,165.80 × 9,999.60
  4. Step 4: Simplify right side
    10,777.20x = 161,651,533.68
  5. Step 5: Solve for x
    x = 161,651,533.68/10,777.20
  6. Step 6: Final answer
    x = 14,999.40

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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.