Home / 21,685.45-29,927.06-13,186.16

Finding the Fourth Proportional to 21,685.45, 29,927.06 and 13,186.16

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Solution

The fourth proportional to 21,685.45, 29,927.06 and 13,186.16 is: 18,197.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,685.45 : 29,927.06 = 13,186.16 : x
  2. Step 2: Convert to fraction form
    21,685.45/29,927.06 = 13,186.16/x
  3. Step 3: Cross multiply
    21,685.45x = 29,927.06 × 13,186.16
  4. Step 4: Simplify right side
    21,685.45x = 394,623,109.27
  5. Step 5: Solve for x
    x = 394,623,109.27/21,685.45
  6. Step 6: Final answer
    x = 18,197.60

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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.