Home / 15,086.94-20,782.80-12,841.62

Finding the Fourth Proportional to 15,086.94, 20,782.80 and 12,841.62

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Solution

The fourth proportional to 15,086.94, 20,782.80 and 12,841.62 is: 17,689.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,086.94 : 20,782.80 = 12,841.62 : x
  2. Step 2: Convert to fraction form
    15,086.94/20,782.80 = 12,841.62/x
  3. Step 3: Cross multiply
    15,086.94x = 20,782.80 × 12,841.62
  4. Step 4: Simplify right side
    15,086.94x = 266,884,820.14
  5. Step 5: Solve for x
    x = 266,884,820.14/15,086.94
  6. Step 6: Final answer
    x = 17,689.79

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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.