Home / 15,310.42-21,126.75-8,596.78

Finding the Fourth Proportional to 15,310.42, 21,126.75 and 8,596.78

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Solution

The fourth proportional to 15,310.42, 21,126.75 and 8,596.78 is: 11,862.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,310.42 : 21,126.75 = 8,596.78 : x
  2. Step 2: Convert to fraction form
    15,310.42/21,126.75 = 8,596.78/x
  3. Step 3: Cross multiply
    15,310.42x = 21,126.75 × 8,596.78
  4. Step 4: Simplify right side
    15,310.42x = 181,621,936.81
  5. Step 5: Solve for x
    x = 181,621,936.81/15,310.42
  6. Step 6: Final answer
    x = 11,862.64

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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.