Home / 13,590-20,362.44-9,621.66

Finding the Fourth Proportional to 13,590, 20,362.44 and 9,621.66

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Solution

The fourth proportional to 13,590, 20,362.44 and 9,621.66 is: 14,416.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,590 : 20,362.44 = 9,621.66 : x
  2. Step 2: Convert to fraction form
    13,590/20,362.44 = 9,621.66/x
  3. Step 3: Cross multiply
    13,590x = 20,362.44 × 9,621.66
  4. Step 4: Simplify right side
    13,590x = 195,920,474.45
  5. Step 5: Solve for x
    x = 195,920,474.45/13,590
  6. Step 6: Final answer
    x = 14,416.52

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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.