Home / 21,954.40-30,275.50-20,133.08

Finding the Fourth Proportional to 21,954.40, 30,275.50 and 20,133.08

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Solution

The fourth proportional to 21,954.40, 30,275.50 and 20,133.08 is: 27,763.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,954.40 : 30,275.50 = 20,133.08 : x
  2. Step 2: Convert to fraction form
    21,954.40/30,275.50 = 20,133.08/x
  3. Step 3: Cross multiply
    21,954.40x = 30,275.50 × 20,133.08
  4. Step 4: Simplify right side
    21,954.40x = 609,539,063.54
  5. Step 5: Solve for x
    x = 609,539,063.54/21,954.40
  6. Step 6: Final answer
    x = 27,763.87

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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.