Home / 30,981.80-46,446.58-13,438.42

Finding the Fourth Proportional to 30,981.80, 46,446.58 and 13,438.42

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Solution

The fourth proportional to 30,981.80, 46,446.58 and 13,438.42 is: 20,146.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,981.80 : 46,446.58 = 13,438.42 : x
  2. Step 2: Convert to fraction form
    30,981.80/46,446.58 = 13,438.42/x
  3. Step 3: Cross multiply
    30,981.80x = 46,446.58 × 13,438.42
  4. Step 4: Simplify right side
    30,981.80x = 624,168,649.60
  5. Step 5: Solve for x
    x = 624,168,649.60/30,981.80
  6. Step 6: Final answer
    x = 20,146.30

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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.