Home / 13,742.53-18,964.77-7,774.08

Finding the Fourth Proportional to 13,742.53, 18,964.77 and 7,774.08

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Solution

The fourth proportional to 13,742.53, 18,964.77 and 7,774.08 is: 10,728.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,742.53 : 18,964.77 = 7,774.08 : x
  2. Step 2: Convert to fraction form
    13,742.53/18,964.77 = 7,774.08/x
  3. Step 3: Cross multiply
    13,742.53x = 18,964.77 × 7,774.08
  4. Step 4: Simplify right side
    13,742.53x = 147,433,538.89
  5. Step 5: Solve for x
    x = 147,433,538.89/13,742.53
  6. Step 6: Final answer
    x = 10,728.27

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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.