Home / 21,298.20-29,396.53-13,237.95

Finding the Fourth Proportional to 21,298.20, 29,396.53 and 13,237.95

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Solution

The fourth proportional to 21,298.20, 29,396.53 and 13,237.95 is: 18,271.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,298.20 : 29,396.53 = 13,237.95 : x
  2. Step 2: Convert to fraction form
    21,298.20/29,396.53 = 13,237.95/x
  3. Step 3: Cross multiply
    21,298.20x = 29,396.53 × 13,237.95
  4. Step 4: Simplify right side
    21,298.20x = 389,149,684.43
  5. Step 5: Solve for x
    x = 389,149,684.43/21,298.20
  6. Step 6: Final answer
    x = 18,271.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.