Home / 15,189.82-20,959.44-10,145.95

Finding the Fourth Proportional to 15,189.82, 20,959.44 and 10,145.95

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Solution

The fourth proportional to 15,189.82, 20,959.44 and 10,145.95 is: 13,999.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,189.82 : 20,959.44 = 10,145.95 : x
  2. Step 2: Convert to fraction form
    15,189.82/20,959.44 = 10,145.95/x
  3. Step 3: Cross multiply
    15,189.82x = 20,959.44 × 10,145.95
  4. Step 4: Simplify right side
    15,189.82x = 212,653,482.67
  5. Step 5: Solve for x
    x = 212,653,482.67/15,189.82
  6. Step 6: Final answer
    x = 13,999.73

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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.