Home / 30,581.20-45,885.40-19,485.04

Finding the Fourth Proportional to 30,581.20, 45,885.40 and 19,485.04

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Solution

The fourth proportional to 30,581.20, 45,885.40 and 19,485.04 is: 29,236.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,581.20 : 45,885.40 = 19,485.04 : x
  2. Step 2: Convert to fraction form
    30,581.20/45,885.40 = 19,485.04/x
  3. Step 3: Cross multiply
    30,581.20x = 45,885.40 × 19,485.04
  4. Step 4: Simplify right side
    30,581.20x = 894,078,854.42
  5. Step 5: Solve for x
    x = 894,078,854.42/30,581.20
  6. Step 6: Final answer
    x = 29,236.23

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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.