Home / 11,059.20-16,588.80-7,142.40

Finding the Fourth Proportional to 11,059.20, 16,588.80 and 7,142.40

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Solution

The fourth proportional to 11,059.20, 16,588.80 and 7,142.40 is: 10,713.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,059.20 : 16,588.80 = 7,142.40 : x
  2. Step 2: Convert to fraction form
    11,059.20/16,588.80 = 7,142.40/x
  3. Step 3: Cross multiply
    11,059.20x = 16,588.80 × 7,142.40
  4. Step 4: Simplify right side
    11,059.20x = 118,483,845.12
  5. Step 5: Solve for x
    x = 118,483,845.12/11,059.20
  6. Step 6: Final answer
    x = 10,713.60

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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.