Home / 12,135.32-16,749.96-7,099.28

Finding the Fourth Proportional to 12,135.32, 16,749.96 and 7,099.28

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Solution

The fourth proportional to 12,135.32, 16,749.96 and 7,099.28 is: 9,798.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,135.32 : 16,749.96 = 7,099.28 : x
  2. Step 2: Convert to fraction form
    12,135.32/16,749.96 = 7,099.28/x
  3. Step 3: Cross multiply
    12,135.32x = 16,749.96 × 7,099.28
  4. Step 4: Simplify right side
    12,135.32x = 118,912,656.03
  5. Step 5: Solve for x
    x = 118,912,656.03/12,135.32
  6. Step 6: Final answer
    x = 9,798.89

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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.