Home / 30,257.03-45,385.16-13,605.30

Finding the Fourth Proportional to 30,257.03, 45,385.16 and 13,605.30

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Solution

The fourth proportional to 30,257.03, 45,385.16 and 13,605.30 is: 20,407.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,257.03 : 45,385.16 = 13,605.30 : x
  2. Step 2: Convert to fraction form
    30,257.03/45,385.16 = 13,605.30/x
  3. Step 3: Cross multiply
    30,257.03x = 45,385.16 × 13,605.30
  4. Step 4: Simplify right side
    30,257.03x = 617,478,649.32
  5. Step 5: Solve for x
    x = 617,478,649.32/30,257.03
  6. Step 6: Final answer
    x = 20,407.78

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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.