Home / 21,723.33-29,981.40-13,766.28

Finding the Fourth Proportional to 21,723.33, 29,981.40 and 13,766.28

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Solution

The fourth proportional to 21,723.33, 29,981.40 and 13,766.28 is: 18,999.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,723.33 : 29,981.40 = 13,766.28 : x
  2. Step 2: Convert to fraction form
    21,723.33/29,981.40 = 13,766.28/x
  3. Step 3: Cross multiply
    21,723.33x = 29,981.40 × 13,766.28
  4. Step 4: Simplify right side
    21,723.33x = 412,732,347.19
  5. Step 5: Solve for x
    x = 412,732,347.19/21,723.33
  6. Step 6: Final answer
    x = 18,999.50

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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.