Home / 21,772.95-30,047.85-13,273.80

Finding the Fourth Proportional to 21,772.95, 30,047.85 and 13,273.80

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Solution

The fourth proportional to 21,772.95, 30,047.85 and 13,273.80 is: 18,318.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,772.95 : 30,047.85 = 13,273.80 : x
  2. Step 2: Convert to fraction form
    21,772.95/30,047.85 = 13,273.80/x
  3. Step 3: Cross multiply
    21,772.95x = 30,047.85 × 13,273.80
  4. Step 4: Simplify right side
    21,772.95x = 398,849,151.33
  5. Step 5: Solve for x
    x = 398,849,151.33/21,772.95
  6. Step 6: Final answer
    x = 18,318.56

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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.