Home / 21,571.54-29,770.06-13,074.40

Finding the Fourth Proportional to 21,571.54, 29,770.06 and 13,074.40

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Solution

The fourth proportional to 21,571.54, 29,770.06 and 13,074.40 is: 18,043.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,571.54 : 29,770.06 = 13,074.40 : x
  2. Step 2: Convert to fraction form
    21,571.54/29,770.06 = 13,074.40/x
  3. Step 3: Cross multiply
    21,571.54x = 29,770.06 × 13,074.40
  4. Step 4: Simplify right side
    21,571.54x = 389,225,672.46
  5. Step 5: Solve for x
    x = 389,225,672.46/21,571.54
  6. Step 6: Final answer
    x = 18,043.48

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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.