Home / 21,559.58-29,751.23-15,188.73

Finding the Fourth Proportional to 21,559.58, 29,751.23 and 15,188.73

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Solution

The fourth proportional to 21,559.58, 29,751.23 and 15,188.73 is: 20,959.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,559.58 : 29,751.23 = 15,188.73 : x
  2. Step 2: Convert to fraction form
    21,559.58/29,751.23 = 15,188.73/x
  3. Step 3: Cross multiply
    21,559.58x = 29,751.23 × 15,188.73
  4. Step 4: Simplify right side
    21,559.58x = 451,883,437.61
  5. Step 5: Solve for x
    x = 451,883,437.61/21,559.58
  6. Step 6: Final answer
    x = 20,959.75

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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.