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Finding the Fourth Proportional to 15,999.67, 23,999.52 and 4,312.90

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Solution

The fourth proportional to 15,999.67, 23,999.52 and 4,312.90 is: 6,469.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,999.67 : 23,999.52 = 4,312.90 : x
  2. Step 2: Convert to fraction form
    15,999.67/23,999.52 = 4,312.90/x
  3. Step 3: Cross multiply
    15,999.67x = 23,999.52 × 4,312.90
  4. Step 4: Simplify right side
    15,999.67x = 103,507,529.81
  5. Step 5: Solve for x
    x = 103,507,529.81/15,999.67
  6. Step 6: Final answer
    x = 6,469.35

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Similar ratio
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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.