Home / 30,989.50-46,475.94-13,455.16

Finding the Fourth Proportional to 30,989.50, 46,475.94 and 13,455.16

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Solution

The fourth proportional to 30,989.50, 46,475.94 and 13,455.16 is: 20,179.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,989.50 : 46,475.94 = 13,455.16 : x
  2. Step 2: Convert to fraction form
    30,989.50/46,475.94 = 13,455.16/x
  3. Step 3: Cross multiply
    30,989.50x = 46,475.94 × 13,455.16
  4. Step 4: Simplify right side
    30,989.50x = 625,341,208.85
  5. Step 5: Solve for x
    x = 625,341,208.85/30,989.50
  6. Step 6: Final answer
    x = 20,179.13

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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.