Home / 16,980.90-25,459.11-11,420.52

Finding the Fourth Proportional to 16,980.90, 25,459.11 and 11,420.52

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Solution

The fourth proportional to 16,980.90, 25,459.11 and 11,420.52 is: 17,122.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,980.90 : 25,459.11 = 11,420.52 : x
  2. Step 2: Convert to fraction form
    16,980.90/25,459.11 = 11,420.52/x
  3. Step 3: Cross multiply
    16,980.90x = 25,459.11 × 11,420.52
  4. Step 4: Simplify right side
    16,980.90x = 290,756,274.94
  5. Step 5: Solve for x
    x = 290,756,274.94/16,980.90
  6. Step 6: Final answer
    x = 17,122.55

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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.