Home / 11,485.90-15,850.20-7,008.04

Finding the Fourth Proportional to 11,485.90, 15,850.20 and 7,008.04

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Solution

The fourth proportional to 11,485.90, 15,850.20 and 7,008.04 is: 9,670.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,485.90 : 15,850.20 = 7,008.04 : x
  2. Step 2: Convert to fraction form
    11,485.90/15,850.20 = 7,008.04/x
  3. Step 3: Cross multiply
    11,485.90x = 15,850.20 × 7,008.04
  4. Step 4: Simplify right side
    11,485.90x = 111,078,835.61
  5. Step 5: Solve for x
    x = 111,078,835.61/11,485.90
  6. Step 6: Final answer
    x = 9,670.89

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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.