Home / 30,314.45-45,450.54-13,438.32

Finding the Fourth Proportional to 30,314.45, 45,450.54 and 13,438.32

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Solution

The fourth proportional to 30,314.45, 45,450.54 and 13,438.32 is: 20,148.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,314.45 : 45,450.54 = 13,438.32 : x
  2. Step 2: Convert to fraction form
    30,314.45/45,450.54 = 13,438.32/x
  3. Step 3: Cross multiply
    30,314.45x = 45,450.54 × 13,438.32
  4. Step 4: Simplify right side
    30,314.45x = 610,778,900.69
  5. Step 5: Solve for x
    x = 610,778,900.69/30,314.45
  6. Step 6: Final answer
    x = 20,148.11

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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.