Home / 13,742.24-18,965.10-7,774.49

Finding the Fourth Proportional to 13,742.24, 18,965.10 and 7,774.49

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Solution

The fourth proportional to 13,742.24, 18,965.10 and 7,774.49 is: 10,729.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,742.24 : 18,965.10 = 7,774.49 : x
  2. Step 2: Convert to fraction form
    13,742.24/18,965.10 = 7,774.49/x
  3. Step 3: Cross multiply
    13,742.24x = 18,965.10 × 7,774.49
  4. Step 4: Simplify right side
    13,742.24x = 147,443,980.30
  5. Step 5: Solve for x
    x = 147,443,980.30/13,742.24
  6. Step 6: Final answer
    x = 10,729.25

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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.