Home / 13,066.34-18,029.57-7,400.75

Finding the Fourth Proportional to 13,066.34, 18,029.57 and 7,400.75

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Solution

The fourth proportional to 13,066.34, 18,029.57 and 7,400.75 is: 10,211.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,066.34 : 18,029.57 = 7,400.75 : x
  2. Step 2: Convert to fraction form
    13,066.34/18,029.57 = 7,400.75/x
  3. Step 3: Cross multiply
    13,066.34x = 18,029.57 × 7,400.75
  4. Step 4: Simplify right side
    13,066.34x = 133,432,213.03
  5. Step 5: Solve for x
    x = 133,432,213.03/13,066.34
  6. Step 6: Final answer
    x = 10,211.91

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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.