Home / 27,999.84-38,642.46-20,913.96

Finding the Fourth Proportional to 27,999.84, 38,642.46 and 20,913.96

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Solution

The fourth proportional to 27,999.84, 38,642.46 and 20,913.96 is: 28,863.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,999.84 : 38,642.46 = 20,913.96 : x
  2. Step 2: Convert to fraction form
    27,999.84/38,642.46 = 20,913.96/x
  3. Step 3: Cross multiply
    27,999.84x = 38,642.46 × 20,913.96
  4. Step 4: Simplify right side
    27,999.84x = 808,166,862.74
  5. Step 5: Solve for x
    x = 808,166,862.74/27,999.84
  6. Step 6: Final answer
    x = 28,863.27

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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.