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Finding the Fourth Proportional to 15,999.42, 23,999.48 and 4,905.86

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Solution

The fourth proportional to 15,999.42, 23,999.48 and 4,905.86 is: 7,358.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,999.42 : 23,999.48 = 4,905.86 : x
  2. Step 2: Convert to fraction form
    15,999.42/23,999.48 = 4,905.86/x
  3. Step 3: Cross multiply
    15,999.42x = 23,999.48 × 4,905.86
  4. Step 4: Simplify right side
    15,999.42x = 117,738,158.42
  5. Step 5: Solve for x
    x = 117,738,158.42/15,999.42
  6. Step 6: Final answer
    x = 7,358.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.