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Finding the Fourth Proportional to 13,862.99, 20,888.01 and 11,451.80

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Solution

The fourth proportional to 13,862.99, 20,888.01 and 11,451.80 is: 17,254.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,862.99 : 20,888.01 = 11,451.80 : x
  2. Step 2: Convert to fraction form
    13,862.99/20,888.01 = 11,451.80/x
  3. Step 3: Cross multiply
    13,862.99x = 20,888.01 × 11,451.80
  4. Step 4: Simplify right side
    13,862.99x = 239,205,208.48
  5. Step 5: Solve for x
    x = 239,205,208.48/13,862.99
  6. Step 6: Final answer
    x = 17,254.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.