Home / 13,213.64-18,236.34-7,549.28

Finding the Fourth Proportional to 13,213.64, 18,236.34 and 7,549.28

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Solution

The fourth proportional to 13,213.64, 18,236.34 and 7,549.28 is: 10,418.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,213.64 : 18,236.34 = 7,549.28 : x
  2. Step 2: Convert to fraction form
    13,213.64/18,236.34 = 7,549.28/x
  3. Step 3: Cross multiply
    13,213.64x = 18,236.34 × 7,549.28
  4. Step 4: Simplify right side
    13,213.64x = 137,671,236.84
  5. Step 5: Solve for x
    x = 137,671,236.84/13,213.64
  6. Step 6: Final answer
    x = 10,418.87

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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.