Home / 15,308.98-21,126.40-8,596.78

Finding the Fourth Proportional to 15,308.98, 21,126.40 and 8,596.78

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Solution

The fourth proportional to 15,308.98, 21,126.40 and 8,596.78 is: 11,863.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,308.98 : 21,126.40 = 8,596.78 : x
  2. Step 2: Convert to fraction form
    15,308.98/21,126.40 = 8,596.78/x
  3. Step 3: Cross multiply
    15,308.98x = 21,126.40 × 8,596.78
  4. Step 4: Simplify right side
    15,308.98x = 181,619,012.99
  5. Step 5: Solve for x
    x = 181,619,012.99/15,308.98
  6. Step 6: Final answer
    x = 11,863.56

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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.