Home / 21,681.84-29,914.92-13,727.46

Finding the Fourth Proportional to 21,681.84, 29,914.92 and 13,727.46

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Solution

The fourth proportional to 21,681.84, 29,914.92 and 13,727.46 is: 18,940.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,681.84 : 29,914.92 = 13,727.46 : x
  2. Step 2: Convert to fraction form
    21,681.84/29,914.92 = 13,727.46/x
  3. Step 3: Cross multiply
    21,681.84x = 29,914.92 × 13,727.46
  4. Step 4: Simplify right side
    21,681.84x = 410,655,867.70
  5. Step 5: Solve for x
    x = 410,655,867.70/21,681.84
  6. Step 6: Final answer
    x = 18,940.08

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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.