Home / 13,742.34-18,964.86-7,773.89

Finding the Fourth Proportional to 13,742.34, 18,964.86 and 7,773.89

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Solution

The fourth proportional to 13,742.34, 18,964.86 and 7,773.89 is: 10,728.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,742.34 : 18,964.86 = 7,773.89 : x
  2. Step 2: Convert to fraction form
    13,742.34/18,964.86 = 7,773.89/x
  3. Step 3: Cross multiply
    13,742.34x = 18,964.86 × 7,773.89
  4. Step 4: Simplify right side
    13,742.34x = 147,430,640.68
  5. Step 5: Solve for x
    x = 147,430,640.68/13,742.34
  6. Step 6: Final answer
    x = 10,728.20

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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.