Home / 13,240.64-18,266.88-7,650.56

Finding the Fourth Proportional to 13,240.64, 18,266.88 and 7,650.56

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Solution

The fourth proportional to 13,240.64, 18,266.88 and 7,650.56 is: 10,554.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,240.64 : 18,266.88 = 7,650.56 : x
  2. Step 2: Convert to fraction form
    13,240.64/18,266.88 = 7,650.56/x
  3. Step 3: Cross multiply
    13,240.64x = 18,266.88 × 7,650.56
  4. Step 4: Simplify right side
    13,240.64x = 139,751,861.45
  5. Step 5: Solve for x
    x = 139,751,861.45/13,240.64
  6. Step 6: Final answer
    x = 10,554.77

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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.