Home / 30,558.20-45,808-19,430.44

Finding the Fourth Proportional to 30,558.20, 45,808 and 19,430.44

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Solution

The fourth proportional to 30,558.20, 45,808 and 19,430.44 is: 29,127.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,558.20 : 45,808 = 19,430.44 : x
  2. Step 2: Convert to fraction form
    30,558.20/45,808 = 19,430.44/x
  3. Step 3: Cross multiply
    30,558.20x = 45,808 × 19,430.44
  4. Step 4: Simplify right side
    30,558.20x = 890,069,595.52
  5. Step 5: Solve for x
    x = 890,069,595.52/30,558.20
  6. Step 6: Final answer
    x = 29,127.03

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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.