Home / 21,113.26-29,127.60-13,563.99

Finding the Fourth Proportional to 21,113.26, 29,127.60 and 13,563.99

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Solution

The fourth proportional to 21,113.26, 29,127.60 and 13,563.99 is: 18,712.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,113.26 : 29,127.60 = 13,563.99 : x
  2. Step 2: Convert to fraction form
    21,113.26/29,127.60 = 13,563.99/x
  3. Step 3: Cross multiply
    21,113.26x = 29,127.60 × 13,563.99
  4. Step 4: Simplify right side
    21,113.26x = 395,086,475.12
  5. Step 5: Solve for x
    x = 395,086,475.12/21,113.26
  6. Step 6: Final answer
    x = 18,712.72

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1.5x scale

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.