Home / 10,912.08-15,047.64-6,663.60

Finding the Fourth Proportional to 10,912.08, 15,047.64 and 6,663.60

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Solution

The fourth proportional to 10,912.08, 15,047.64 and 6,663.60 is: 9,189.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,912.08 : 15,047.64 = 6,663.60 : x
  2. Step 2: Convert to fraction form
    10,912.08/15,047.64 = 6,663.60/x
  3. Step 3: Cross multiply
    10,912.08x = 15,047.64 × 6,663.60
  4. Step 4: Simplify right side
    10,912.08x = 100,271,453.90
  5. Step 5: Solve for x
    x = 100,271,453.90/10,912.08
  6. Step 6: Final answer
    x = 9,189.03

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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.