Home / 30,350.30-45,539.88-13,715.42

Finding the Fourth Proportional to 30,350.30, 45,539.88 and 13,715.42

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Solution

The fourth proportional to 30,350.30, 45,539.88 and 13,715.42 is: 20,579.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,350.30 : 45,539.88 = 13,715.42 : x
  2. Step 2: Convert to fraction form
    30,350.30/45,539.88 = 13,715.42/x
  3. Step 3: Cross multiply
    30,350.30x = 45,539.88 × 13,715.42
  4. Step 4: Simplify right side
    30,350.30x = 624,598,580.95
  5. Step 5: Solve for x
    x = 624,598,580.95/30,350.30
  6. Step 6: Final answer
    x = 20,579.65

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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.